@Uilebheist @cstross it's not just interns.

When I started in banking almost all front end systems were excel sheets created by traders that had completed a weekend course in VBA.

I made a living for a decade replacing that stuff.

One guy tried to get me fired because my replacement metal trading system flipped his bottom line to a massive negative.

He called a high profile meeting to shit on my maths. Turned out he had been confusing US and Imperial Tons his whole career. 🫣