I used it for the same back in 2003, so maybe my views are outdated. I think it only works because when you're on the trading desk things need to be done yester

I used it for the same back in 2003, so maybe my views are outdated. I think it only works because when you're on the trading desk things need to be done yesterday. For scripting a thing or two it's not terrible, but back then it wasn't so easy to split out the code for version control. Some formula for pricing this or that is gonna work in whatever language anyway and doesn't change a whole lot though. It was when I started to pull FIX connections into it that I thought maybe it's time to do things properly. Then you're suddenly in need of understanding how the execution model works. Also as soon as you need to follow a schema Excel is too soft. It's trivial for someone to just add an extra bit of info on a row that throws everything.