erlang and erlang VM languages come with 0 being truthy, and the only falsey values are false and nil. I had a junior python programmer disagree with that and

erlang and erlang VM languages come with 0 being truthy, and the only falsey values are false and nil. I had a junior python programmer disagree with that and within 3 weeks of onboarding him we found a place where it made sense for 0 to be a truthy value. I believe it was a place where we had an options list. One of the options was a value that is settable to zero. In elixir: timeout = options[:timeout] || :infinity if zero is falsy, you can be royally screwed with that code, if timeout should be settable to zero (definitely a thing).