A History of Short Words

From the New York Times Crossword Puzzle

WHO

Sat, 1 Jan '22
Start of many a Google search
Tue, 21 Dec '21
Question of identity
Wed, 14 Jul '21
"___ goes there?"
Sat, 8 May '21
It becomes another question when its first letter is moved to the end
Thu, 14 Jan '21
"Have I met her?"