Distinction Kristoff draws at wroclove.rb 2025: there is a semantic difference between specs and tests. Specs are a subset of tests — written for humans, focused on expressing intent. Plain tests (minitest in test mode, testbench, quickdraw by Joel Drapper) are written for the computer. RSpec is a spec tool and is poorly suited to write plain tests; teams that install it and write tests are 'failing at using it correctly'. Ballistic metaphor: don't use a bazooka to kill a child (or a sledgehammer for a nail) when a knife will do.