Thanks for the advice on dogmatism coupled with the statement about having a worthless OS since 1990.<p>&gt; In the context of the OS, multithreading (or something essentially equivalent) is the only way to exploit the abilities of &quot;modern&quot; machines.<p>I noticed that you qualified multithreading with &quot;or something essentially equivalent&quot;. I guess you would agree that qualifying it this way is a good idea. Mr Blandy did not care to do that though: &quot;[...] is the only way to exploit the abilities of modern machines.&quot;<p>I don&#x27;t like that because it sounds like he&#x27;s trying to popularize one approach to concurrency without even acknowledging that it is just one approach.