Excerpt:
Assuming a 50-key typewriter to accommodate letters, numbers, and punctuation, the chance of typing “THE” is one in 50 x 50 x 50 (50-3), or one in 125,000. At a rate of one strike per second this would take 34.72 hours. For the phrase “THE LORD” the chance becomes 50-8 and requires 1,238,663.7 years. The entire Psalm requires 9.552 x 101016 years to complete on average. The age of the universe is only 15 billion years according to evolutionists, so the probability is clearly outside of the realm of possibility. (It is possible that the event can happen at any given point in the trials, but the difference in time needed and time allowed is unreasonable.)
When considering the probability of the assembly of a DNA molecule, the same problems arise. Harold J. Morowitz, professor of biophysics at Yale, has calculated that the formation of one E. coli bacteria in the universe at 10-100,000,000,000, or one in 10 to the power of 100 billion. Sir Fred Hoyle has offered the analogy of a tornado passing through a junkyard and assembling a Boeing 747, “nonsense of a high order” in his words. Natural selection cannot be the mechanism that caused life to form from matter as it can only work on a complete living organism...
Another major problem with the probability argument is that the chemical processes that supposedly formed life are also reversible at every step. As water is released in the formation of amino acids, the water is then available to break the bond in the reverse reaction, which is actually more favorable. Oceans are the last place amino acids would form. Huxley's typewriters would have to include a delete key for each other key in order for the analogy to be complete. No matter how much time and matter was available or the rate of interactions of atoms, the probability remains zero for the reversible reactions involved.
Chapter 5: The Origin of Life - Answers in Genesis]