1. Engineers built toilets, which are very useful for the disposing of wee.
Imagine what would happen if your toilet was not correctly tested.
It may have had a bug in it that caused you to piss in your face! :@
2. It's the same in any non-shit language. Look:
code: sendEmail(to,from,subject,...)
vs
code: saveVariable(content,...)
if (mode = live)
sendEmail(to,from,subject,content)
else
writeFile(content)
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