It can do. But your feet do work outside of woods and fields too.

Ships are much more efficient than cars. Having said that, this wouldn’t have a huge range, nor is it terribly big by container ship standards.

My vote is definitely for fire. Learning to first contain and sustain, then how to create fire. Everything else follows on from that.

Cooking food probably started us down a path to become as intelligent as we are today.

And the light allowed us to have free time at night to try new ideas.

And the warmth allowed us to spread out of Africa.

Partial credit!

I don’t see anyone say here that under normal circumstances you have to identify yourself to police upon their request. I’m fairly certain this is true for all Australian states. It certainly is here in Queensland.