No, this may not qualify as unusual, but some time back my email account got hacked. A friend forwarded an email he had received “from me,” with a link that obviously wasn’t from me. So, I changed the password that I’d kept for several years (OK, I made some minor, rememberable tweaks) into a longer more exceptional one. MUCH harder to remember. Much harder to hack.

But for the next several weeks, 90% of the times I signed into my email account, I automatically used the old email password. Habits die hard. Before…