Ask HN: What xkcd issues are a must read?

Here's some data on which ones are shared most on reddit: https://xkcdref.info/statistics/

thanks for the awesome link!

The right answer is: all of them :D

Why would an xkcd issue be a must read?

Probably in a funny way?

I like three very much:

1) "we are dealing with a sysadmin"

2) Math over physics over chemistry over biology...

3) Knuth's answer to array index inconsistency across languages (some start from zero others from one because [reasons])

Very funny indeed, thanks!

Links for the lazy

1) "we are dealing with a sysadmin" - http://xkcd.com/705/

2) Math over physics over chemistry over biology... - https://xkcd.com/435/

3) Knuth's answer to array index inconsistency across languages (some start from zero others from one because [reasons]) - https://xkcd.com/163/