did you just not read the last paragraph??

unfortunately in reality it is a curved line on a sphere

you missed the point completely. life has always survived mass extinction events and will survive this one too. life will eventually flourish once again and humanity will have been a blip in earths history

for the record, cars with combustion engines can also be any shape

the nicotine gives you the feeling, not the smoke itself

if it was past the boiling point it would have already boiled off

metals