I wonder how curated the input data is. Just on the surface of it, there's a lot of spaghetti code out there that people may have shared. I once saw a codebase

I wonder how curated the input data is. Just on the surface of it, there's a lot of spaghetti code out there that people may have shared. I once saw a codebase that used three different implementations of a date/time structure and overloaded operators to convert between them. Or people rolling their own crypto, sort, or random functions, reimplementing data structures, etc.