It does, if the concurrency is to be transparent. Yes, you can add extra syntax and mutexes that allow the programmer to indicate that two or more separate statements may be overlapped--but why if you can do it without?

Extra syntax introduces extra level of lexical scoping--possible closures. I looked at this a few days ago. What happens when two threads attempt to access the same closure passed in from a level above them?

Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
Lingua non convalesco, consenesco et abolesco.
Rule 1 has a caveat! -- Who broke the cabal?

In reply to Re^26: Why is the execution order of subexpressions undefined? by BrowserUk
in thread Why is the execution order of subexpressions undefined? by BrowserUk

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