Let’s assume some kind of evolutionary benefit.

replace blood in a botched emergency transfusion.

drown kittens.

mind the gap.

create an organised religion.

pay for goods and services of an equivalent value.

score 24 with a double word score in scrabble.

I can get geekier with more details… and I’m proud that I did my own soldering.

They’re soldered badly, but practice makes perfect.

And even if you’re rushed, or you’re trying to keep an eye on kids, a cursory glance may allow you to point them in the direction of a member of staff, helping indirectly.

If I’m privileged enough to be able to help, and fortunate enough to be asked, absolutely I’m helping.

And you won’t be allowed to share your mains.