How is UX design and research at Apple, in comparison to at Google, Facebook, and Microsoft?

I don't work for the above mentioned companies, but one thing that I can say (and you will read) is that design always has to start at the top. Companies are gradually learning this, but establishing design as a culture is not something that can happen overnight. That's why very few have been successful at doing this. Working in an engineering company aspiring to be a design driven company, I can definitely vouch for this.

I'm posting this link as I thought it was relevant to the question. 4 Myths About Apple Design, From An Ex-Apple Designer
Who invented musical instruments?

Wind instruments made of bones have been found that date back to before the dawn of recorded history. If there was a first, the exact identity of whoever made it - as well as the instrument itself - is lost to time.

Can one live happily being single for their whole life?

I know a person who is happily single; he's a twin, so it's easy, but he may decide to be alone when his brother passes away.You don't necessarily need to get your needs met by a wife (except sexual), you can rely on