Scientific similarity &c.
Further to the monkeying about with Deoxyriboneucleic Acid data, I can only speak for my own family. Others must speak for their forbears, or forchimps, etc. Yet the question of 'similarity' is not as simple or straightforward as it perhaps ought to be considering the mathematical percentages that have been posited.
We know that DNA in cells contains much of the information necessary for the development of an organism. In other words, if two organisms look similar, we would expect there to be some similarity also in their DNA. The DNA of a cow and a whale (two mammals) should be more alike than the DNA of a cow and a bacterium. If it were not so, then the whole idea of DNA being the information carrier in living things would have to be questioned. Likewise, humans and apes have many morphological similarities, so we would expect similarities in their DNA. Of all the animals, chimps are most like humans, so we would expect that their DNA would be most like human DNA, but not totally like human DNA.
Certain biochemical capacities are common to all living things, so there is even a degree of similarity between the DNA of yeast, for example, and that of human beings. Because human cells can do many of the things that yeast can do, we share similarities in the DNA sequences that code for the enzymes and proteins that do these same jobs in both types of cells. Some of the sequences, for example those that code for the histone proteins, are almost identical.
What of the 97% similarity claimed between humans and chimps? The figures quoted do not mean quite what is claimed in the popular publications (and even some science journals). DNA contains its information in the sequence of four chemical compounds known as nucleotides, abbreviated C,G,A,T. Complex translation machinery in the cell ‘reads’ a series of three-letter ‘words’ of these chemical ‘letters’ and translates these into the sequences of the 20 different amino acids in proteins (a typical protein has hundreds of amino acids). The human DNA has over 3 billion nucleotides. Neither the human nor the chimp DNA has been anywhere near fully sequenced to allow a proper comparison.2 It may be a while before such a comparison can be made because it may be 2005 before we have the full sequence of human DNA, and chimp DNA sequencing has a much lower priority.
Where then did the ‘97% similarity’ come from? It was inferred from a fairly crude technique called DNA hybridization, where small parts of human DNA are split into single strands and allowed to re-form double strands (duplex) with chimp DNA.3 However, there are various reasons DNA does or does not hybridize, only one of which is degree of similarity. Consequently, those working in the field of molecular homology do not use this somewhat arbitrary figure; other figures derived from the shape of the ‘melting curve’ are used instead.4 Why has the 97% figure been popularized then? Perhaps it served the purpose of indoctrinating the scientifically illiterate with evolution—like the imaginative ‘ape-men’ reconstructions in many museums.
Interestingly, the original papers did not contain the basic data and the reader had to accept the interpretation of the data ‘on faith.’ Sarich and co-workers5 obtained the original data and used them in their discussion of which parameters should be used in homology studies.6 Sarich et al. discovered considerable sloppiness in the way Sibley and Ahlquist generated their data as well as their statistical analysis. Even if everything else were above criticism, the 97% figure came from making a very basic statistical error—averaging two figures without taking into account differences in the number of observations contributing to each figure. When a proper mean is calculated it is 96.2%, not 97%. However, the work lacked true replication, so no real meaning can be attached to the figures published by Sibley and Ahlquist.
What if human and chimp DNA were even 96% similar? What would that mean? Would it mean that humans could have ‘evolved’ from a common ancestor with chimps? Not at all! The amount of information in the 3 billion base pairs in the DNA in every human cell has been estimated to be equivalent to that in 1,000 books of 500 pages each.7 If humans were ‘only’ 4% different this still amounts to 120 million base pairs, equivalent to about 12 million words, or 40 large books of information. This is an impossible barrier for mutations (random changes) to cross.
Does a high degree of similarity mean that two DNA sequences have the same meaning or function? No, not necessarily. Compare the following sentences:
There are many scientists today who question the evolutionary paradigm and its atheistic philosophical implications.
There are not many scientists today who question the evolutionary paradigm and its atheistic philosophical implications.
These sentences have 97% homology and yet have opposite meanings! There is a strong analogy here to the way in which large DNA sequences can be turned on or off by small control sequences.
The dissimilarities between the DNA of humans and the more complex genetic make-up of frogs, should, if we were to fall prey to simplistic and po;ular notions of genetic science, would lead us to conclude, wrongly, that our little green friends were far more intellectually gifted than ourselves. A little sober reflection will show how foolish we would be were we to arrive at any such conclusion.
In summary, the methods used to generate the figures so often quoted (and misquoted!) are very clumsy. (A recent much more rigorous comparison found 95% similarity. See, for example, RJ Britten's paper, Divergence between samples of chimpanzee and human DNA sequences is 5% counting indels, Proc. Nat. Acad. Sci. 99:13633–13635, 2002.) They do not legitimize the claim that people and chimps are related in an evolutionary sense. The more we learn of the complexities of the biochemical systems in our cells, the more marvelous they become. Furthermore, even if we accept the data as legitimate, knwowing what we do know about biolotgiucal development and its posisbilities, there seems to be no way that mutations could bridge the gap between primates and humans.
M:)RGANITE
On the 24 hour day (or not) of Genesis
Right there in Genesis is the account of creation and it says, the first day, the second day, and so forth upm to the seventh day. The belief that 'day' in English as meaning, and only meaning, the twenty-four hour day is not supported by the original language, regardless of how it has been traditionally understood.
There is nothing in the Bible that describes the days of creatioon as twenty-four hour days, just as there is nothing that say otherwise. What then do we have as a reliable guide to reaching correct understanding?
The Hebrew word 'yowm' is the equivalent of the English word 'day' - but neither is used exclusively to mean strictly a twenty-four hour period unless the context forces us to conlcude that it can mean nothing else.
If we look at English meanings of 'day,' we will find that while it is used of a twenty-four hour time, that usage is not exclusive and attempts to make it exclusive will fall under their own weight.
Hebrew days were calculated "from even unto even" (Lev. 23:32), meaning from sunset to sunset.
That period between dawn and dark is the day as distinguished from the night.
(Gen. 8:22; Ps. 19: 2.)
According to Jesus, a day is twenlve hours: "Are there not twelve hours in the day?"
(John 11:9.)
A day is a specified age, time, or period. (Job 19:25).
'yowm, pronounced yome, is a noun and carries all the following meanings:
A day
A time
A year
The day, as opposed to the night
A 24 hour period
A division of time
A working day
A day's journey
As 'days,' a lifetime
A time
A period unspecified, hence, without limit
The argument for taking Creation 'days' as literal chronological days is not profound, and is not particularly convincing.
One reason given in support is said to be that Hebrew word for "day" in Gen. 1 is defined as an ordinary solar day the first time it is used (v. 5).
However, that understanding begs the question by assuming that the earth relative to the solar system at that time was exactly as it is now. That seems to demand a simple explanation for something that could have been anything but simple.
It is correct to say that when 'yowm' is used in the Bible it often means a common day. However, it is equally correct to say that when it is used in the Bible it does not always mean an ordinary day.
In the absence of a solemn declaration from God as to the length of the creative periods we are left to guess and deduce. Experience show us that when men second-guess God, they are, because they have to be, wrong. If men could fathom of themselves what is in God's mind, then God would not be transcendental, and if he is not transcendental then he is not God.
I will destroy the wisdom of the wise, and will bring to nothing the understanding of the prudent…. Because the foolishness of God is wiser than men; and the weakness of God is stronger than man.-
(I Cor. 1:19-25.)
For what man knoweth the things of a man, save the spirit of man which is in him? even so the things of God knoweth no man, but the Spirit of God [knowth them].
(I Cor. 2:11.)
There is never a promise that everything in the mind of the Omniscient God knows will be told to man on request to satisfy his curiosity without advancing his welfare.
The Lord chose Peter and the other apostles for their humility, responsiveness, and childlike faith and devotion, not for their intellectual attainments, neiyther did he educate them in the minutiae of the scts of God. He told them what they needed to know to serve as his emissaries and to minister in the cure of souls.
Though Paul was an educated man, he was nevertheless pliable and teachable, and he stressed the difference between useless knowledge and the knowledge that leads one to salvation as a constant theme:
Let no man deceive himself. If any man among you seemeth to be wise in this world, let him become a fool, that he may be wise.
For the wisdom of this world is foolishness with God. For it is written, He taketh the wise in their own craftiness.
and also:
The Lord knoweth the thoughts of the wise, that they are vain.
It was concerning the learning and wisdom of men that made the Preacher observe: "Vanity of vanities . . . all is vanity,"
God, speaking of the mysteries of creation and existence, taunted Job:
"Who is this that darkeneth counsel by words without knowledge? Gird up now thy loins like a man; for I will demand of thee, and answer thou me. Where wast thou when I laid the foundations of the earth? declare, if thou hast understanding. . . .
When the morning stars sang together, and all the sons of God shouted for joy? . . . Hast thou commanded the morning since thy days; and caused the dayspring to know his place . . . Have the gates of death been opened unto thee? or hast thou seen the doors of the shadow of death? . . . Canst thou bind the sweet influences of Pleiades, or loose the bands of Orion? Canst thou bring forth Mazzaroth in his season? or canst thou guide Arcturus with his sons? Knowest thou the ordinances of heaven? canst thou set the dominion thereof in the earth?"
Man may understand through the wisdom that God has through time bestowed upon his children many things that Job did not understand. But man still cannot do the simplest arithmetic of God's creations and compute the relationship of the earth, the moon, and the sun, to say nothing of the sun and his whole planetary system, and infinitely farther beyond this, the mysteries of the universe.
Man still does not understand the laws that brough into being and that govern the Pleiades, Orion, Mazzaroth, and Arcturus, and that keep them in their places in the visible universe, and that hold our universe on its way in orderly procession through the deep reaches of endless space. Narrow indeed are the limits of the finite mind when it attempts tp comprehend, or even touch, infinity, eternity.
On our journey to immortality and eternal life we must humbly try to comprehend and live the simple truths of the everlasting Gospel, framed for the weakest and most unlearned amongst us, so simple indeed that "wayfaring men, though fools, shall not err therein."
Eternal truth is not foolishness, but infinite wisdom, but whether the gates of heaven swing in, outwards, or up-and-over, and the length of the creative 'days' are matters for spedculation that have no bearing on the salvation born of Christ's infinite atonement. They are interesting questions, but they are not hills that a Christian should choose to die on.
"Now, unto the King Eternal, immortal, invisible, the only wise God, be honor and glory forever, and ever. Amen."
(1 Timothy 1.17)
M:)RGANITE