We previously learnt this with database triggers and stored procedures, where pretty much everyone with experience says "DON'T DO THIS!" It turns out comminglin

We previously learnt this with database triggers and stored procedures, where pretty much everyone with experience says "DON'T DO THIS!" It turns out commingling your program with your data is an obfuscation, debugging and maintenance nightmare, and you should almost always keep the program manipulating your data separate from the data. And that's before the ridiculous idea of making the program super-hard or even impossible to fix bugs in.