How about ' What tech/framework/language do you trust will truly stand the test of time' ? Sorry if someone has already suggested this but I would love to see opinions.

Go : Web apps,Networking and high cocurrency apps
Pyhton: For the life :D such as deep learning,machine learning,web scraping and etc
Dart,Elixir,Erlang,Scala: Web apps
Javascript: For the life again... :D
C#: Windows only
Swift:iDevices...

@behdad Interesting