cause and delayed effect

Why does someone get brain cancer? I have this theory:

As a child, I fell a few feet and hit my head on a wooden chair. Years later I still had the scar.

So my theory is: the fall damaged my brain. Fifty years later, the damage grew into a tumour.

Okay... no scientific backing at all. I've not even bothered to ask if it is likely. But, as a theory, I like it. Why?

An alternative cause (ignoring random chance and just bad luck) is -- perhaps brain cancer is hereditary.

That's not something that I want to pass on to the kids. I prefer the physical damage explanation.

Oh, and "just bad luck" has never applied to me :-)

Dr Nick Lethbridge / Consulting Dexitroboper

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The stupid person says, "It's impossible". The smart person says, "It's possible, if we can get enough stupid people to do it." (Alfred E. Neuman)

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