They should look up the usage of empty interfaces [in the wild or in-house].

munificent · on July 13, 2017

This is a great point. Other analysis one could do:

1. Look at uses of cast operators in a codebase. How many of those would be eliminated by making the surrounding operation generic?

2. Go through the language spec and see how many features could be moved out of the language and into the core library if generics were supported.