If neither one or the other is big enough, I'll do it.
If you think you should do something, and after thinking about it, there are advantages and disadvantages, and neither of them is that great, then you should do it. This is not just a do-or-die thing in this one case, but because it is not good to get into the decision-making habit of saying, "I won't do it because the benefits are not clear. ---
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