I think the big productivity improvements are those that in retrospect just seem like: "Yeah, that was the right way to do things." Example: I had some large c

I think the big productivity improvements are those that in retrospect just seem like: "Yeah, that was the right way to do things." Example: I had some large csv files to import into a rails app. Instead of writing my own importer and running it with script/runner, I scripted a quick importer ontop of mysqlimport. Mysqlimport ran about 1000x faster than a custom solution.