As long as we're talking about Oz, what do you think about this quote from the CTM Wiki...
Concurrency is what happens when the order of evaluation of expressions is unspecified (cf Parallelism). The main challenge of Concurrency is ensuring the correct result is calculated when order of evaluation is unspecified.

In reply to Re^45: Concurrency in Oz [Was: Why is EO undefined?] by Anonymous Monk
in thread Why is the execution order of subexpressions undefined? by BrowserUk

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