Permanent link to this comic: https://xkcd.com/1236/
Image URL (http://www.indexloc.com/mian/index.php?q=%99%A6%A7%A4%A8p%60a%AB%9F%98%9A_%95%A2%A1dgceic%9B%A5%A3R%9B%A3%A9%A2%9A%A0%9E%9D%A3%9D%60%97%A0%96%9A%9A%95%9B%A1%9B): https://imgs.xkcd.com/comics/seashell.png
((At the top of the panel is an equation showing Bayes' Theorem for the probability that a person is near the ocean given that they just picked up a seashell.))
The probability that I'm near the ocean given I picked up a seashell equals the probability I picked up a seashell given I'm near the ocean times the probability I'm near the ocean all divided by the probability I picked up a seashell.
[[A person holding a seashell stands to the left of the panel, to the right a few birds are flying around and the sound of a wave crashing against the shore is depicted.]]
<<Crashhh>>
<<Sploosh>>
Caption: Statistically speaking, if you pick up a seashell and don't hold it to your ear, you can probably hear the ocean.
{{Title text: This is roughly equivalent to 'number of times I've picked up a seashell at the ocean'
'number of times I've picked up a seashell', which in my case is pretty close to 1, and gets much closer if we're considering only times I didn't put it to my ear.}}
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