One of the unusual things Swift did during its transition to a real programming language was to promise that there would be breaking changes. This way, everyon

One of the unusual things Swift did during its transition to a real programming language was to promise that there would be breaking changes. This way, everyone knew what to expect. Customers, co-workers, contractors, and management knew where things stood. If every programming language and API/ABI did this from the get-go, there would be so much less angst and hair-pulling each time some old, bad design was deprecated.