- In concurrent programming uncaught exceptions won’t leave the future. Both values are available to you just like Results. I also don’t think arguments for concurrent programming are valid though. 99% of all code is single threaded.

- It is checked.

- Result infects the call stack as well.

- handling the error case with a checked exception is also mandatory with handling the success case. There is no separate “execution regime”. What is the difference here:

    val a = try {
        a();
    } catch (b) {
        onB();
    }
    
    val a = match (a()) {
        Success(a) => a
        Failure(b) => onB()
    }