Oh. That does seem troubling then.

On Monday, September 11, 2017 at 6:45:45 PM UTC-4, Jon Zeppieri wrote:
> > On Sep 11, 2017, at 6:39 PM, mrmyers.ra...@gmail.com <javascript:> 
> wrote: 
> > 
> > As far as I'm aware, futures usually shouldn't improve performance 
> outside of networking or hardware-latency type situations. The main goal of 
> futures is just time-sharing, not improving performance. It doesn't 
> genuinely do things in parallel, it just interleaves the execution of 
> several things at once. 
> This isn't true. Futures are for parallelism; they just happen to be 
> defeated by many, many operations. More to the point, they're not for 
> interleaving work. Racket's threads are for that.

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