> Things can randomly work for a long time due to duck typing It's basically like they work by accident. It's not documented what goes in or goes out, so someo

> Things can randomly work for a long time due to duck typing It's basically like they work by accident. It's not documented what goes in or goes out, so someone throws some data into a function and if it doesn't break then consider it success. And any future person that has to make a change has to untangle that whole mess.