As the quip goes, there are two hard problems in computer science: cache invalidation, naming things, and off-by-one errors.

That's three though.

That's the neat part.

Depends what you mean by the name "three"

or "neat"

Not if you start counting at zero!

0,1,2,3

That's 5

"Five is right out"

Once the number three, being the third number, be reached, then lobbest thou thy Holy Hand Grenade of Antioch towards thy foe, who, being naughty in My sight, shall snuff it.

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The week starts and ends on zero

Whoosh

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This has to be the most hilarious comment I've ever seen on HN.

Well, actually...