Is it really practical in 2024? I used pine as my sole e-mail client for many years.
In the last 15 years it feels like every mail expects the client to be able to render html, with no real fallback for text-only. Even when my client only blocks remote images some mail can be quite hard to decipher.
Company handbook even requires me to have a html signature with a picture of the company logo… before that I’ve militantly only sent text-only e-mail.
Not quite Schrödinger’s cat, but in programming we have Heisenbugs named after Schrödinger’s peer.
It’s when you have a bug/crash that is not reproducible when debugging it. Might be that you’re reading some memory that you’re not supposed to, and the debugger just sets it up differently. Maybe you have a race condition that just never happens with the debugger attached.