 same
thread as that in which the event loop runs, where the result of
calling &rsquo;thunk&rsquo; will be received.  As mentioned above, the thunk
itself will run in its own thread.
</p>
<p>As the worker thread calls event-post!, it might be subject to
throttling by the event loop concerned.  See the documentation on the
make-event-loop procedure for further information about that.
</p>
<p>Exceptions may propagate out of this procedure if they arise while
setting up (that is, before the worker thread start