BOTEC means back-of-the-envelope calculation. This can take the form of a few rows in a spreadsheet where someone estimates their counterfactual lives saved / donations induced / welfare improved from a set of choices (ex. doing direct work instead of earning to give).
I have heard of people using these to inform career choices but haven’t seen too many in the wild (even anonymously).
Thanks, this is exactly what I'm looking for.
Accuracy isn't too important here. More interested in how people approach this