It’s quite easy to go down an already discovered path and learn from its mistakes. Also, Valhalla is said to be a 7 PhD combined-difficulty feat to pull off in

It’s quite easy to go down an already discovered path and learn from its mistakes. Also, Valhalla is said to be a 7 PhD combined-difficulty feat to pull off in a backwards compatible way, so it takes time. Java actually cares about that, instead of repeatedly pulling the plug on the whole platform like Microsoft likes to do.