No
Yes, humans evolved from ancestors who had tails.
tails
The outcomes are: heads, tails, tails or tails, heads, tails or tails, tails, heads. You can see that there are 3 possible outcomes with exactly 1 head.
"HUmans aren't born with tails. " Some are born with tails. I would assume if someone really tried to they could... That's if they didn't get it removed already.
Heads+Heads ; Heads+Tails ; Tails+Tails
Except under rare circumstances, humans do not have tails.
Heads and HeadsHeads and Tails Tails and HeadsTails and Tails
Some humans are born with tails, but that is very rare. People who aren't born with tails and don't grow one, they may be able to have tails installed, but only when that is available. You cannot have a tail installed until the future.
We do, it's called our tailbone.
No, they can't.
It has been seen but they are not called cat ears or tails. Normal shaped ears are sometimes folded in such a way that they look pointed. A chromosome problem is seen in Williams Syndrome and these people sometimes have what are called pointy ears. Humans have been born with tails since the fetus (4-6 weeks) has a tail but it is usually absorbed. These tails have no hair and are very short.
cats can interact with humans by waging their tails, purring, or even looking at you with big eyes.