Here's another example of how the long lockdown has addled my brain. I went out to eat last night with a friend, to Divya's Kitchen. We had a nice outdoor table in a roofed but windowless shed. Food & conversation were just what I needed. Then came the bill. I totally forgot how to tip. Double the tax & round up? A third of the bill for tax & tip? Those pretty much come out the same. Or do they? Then my math skills deserted me. I couldn't add or multiple even the simplest numbers. I still don't know if I undertipped (no such think as overtipping). And it was only 2 people. I am so out of practice! Imagine if I had to recover my flirting skills!