I'm studying about salomon v salomon case , and I know that this case in not always absolute but I don't know why, please help me.

My question is:
Why salomon v salomon case is not always absolute?

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Since this question isn't the typical "what does this case stand for?" I'll give you a pointer.

Think about what the main premise of the case is--the major rule of law it stands for. Then think about when that rule might not apply.