We also needed tighter security for running untrusted code. And a way to run small snippets of code quickly. Tight security can be solved by some sort of sandb

We also needed tighter security for running untrusted code. And a way to run small snippets of code quickly. Tight security can be solved by some sort of sandboxing that takes a performance hit and a web of trust. Computers that ran the program can confirm that it is not malicious. Then an app can be run without a performance hit. This is the model of Apple's app store more or less. Except it's not a web of trust but a centralized authority and there is no way to run untrusted code. And it makes a lot of sense. Most apps that are worth using will be used often, no reason they should take a constant performance hit after trust has been established.