What we call Arabic numerals were actually developed in India between the third and fourth century. The Arabs adopted them in the ninth century, and from there they spread into Europe during the Middle Ages.
Just wanted to sperg out a bit, carry on.
There were other humans unrelated to Adam, according to Genesis 4:16. Cain was exiled to a land east of Eden, where he found a wife and had children. This implies the existence of other peoples even from a literalist perspective.
As for the evolutionary perspective, the degree of relation is key; it’s hardly appropriate to consider two species the same simply because they shared a common ancestor at some point prior. If that were the case, nearly anything with a spine could be considered a human relative.
The distinction between “related in a evolutionary sense” and “related in a genetic/ancestral sense” is somewhat muddy, but in terms of connotation I believe your original comment to be largely pedantic.
At risk of sounding Shrewish, I’ll undermine as much as I please