We do not need to future-proof languages, we need to make them replaceable and able to interact with each other. I believe the biggest problem to be environmen

We do not need to future-proof languages, we need to make them replaceable and able to interact with each other. I believe the biggest problem to be environment/io access. It will be the bottleneck of most new language implementations and encourage people to update the old instead of creating the new. A simple fix would be to separate both, like in this blog post having input/output instructions and leave the actual environment interaction to something else.