Question marks abound
Mac’s default dictionary application sources from the Oxford American English Dictionary. I looked up “diaspora,” and it gave me this definition along with a sample sentence in italics, the bold emphasis being mine:
the dispersion of any people from their original homeland : the diaspora of boat people from Asia.
Yes, now that I think about it, I would like to find those boat people ancestors of mine.
Head, meet desk. Face, meet palm.