Thanks, good info for the house that I have lived in for 45 yrs.

Moving into an apartment with ungrounded outlets. I believe there is a GFCI outlet installed but should I move in?

You said to find the first outlet on the string, but didn’t describe how to do that. If you don’t know, you can replace them all with GFCI outlets.

Are you going to pay for everyone to get their house rewired? Not cheap