It’s never so simple. I use a functional programming language but generally in functional programming you don’t want to have global configs but rather to pass functions the things they need. Compilation is mostly fast but there is a lot of code (and we get roughly exponentially faster at building it. The problem is that we also have an exponentially increasing codebase.) Faster deployments could be possible (eg deploying dev builds rather than release builds made in the standard way) but it’s better to have the system work automatically and sensibly in the ordinary case than to try to support quick changes in the extraordinary case. It’s not really a good practice to support deploying random binaries of unknown origin, and certainly not great to do it routinely.) To be clear, excel can have scaling issues too (as well as issues with multiple people trying to change a single sheet) and we ended up recreating some excel-like features in some of our own applications.