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> The results suggest an evolutionary relationship between animal size and tumor suppression

My napkin formula would be p_tumor_body=(V_body/V_cell)*p_tumor_cell, so your statment makes intuitive sense, I'd say. The more cells you have, the more tumor suppression you need to make it a secondary cause of death over your expected life span.

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That expression leads to something that isn't a probability. Try 1-(1-p_tumor_cell)^(V_body/V_cell).

I shouldn't comment on HN from bed after an evening out. Of course the rule of proportion is the wrong approach here. Even though the dimensional analysis seems to work out, it's still wrong. Bad case of thoroughly addled brain, this is supremely embarassing, and too late to delete now. I should be able to do this in my sleep, but I clearly wasn't. Seems there's not enough probabilities in my day-to-day, I will make a point of adding a few to fix my intuitions.

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