On Wed, Oct 6, 2010 at 5:48 AM, William Attwood <wattw...@gmail.com> wrote: > Let's consider it a set of freeways where we want to see the health of the > freeway system, based on the number of accidents that are slowing things > down.
There are several real things (temperature, possibly time) which do not "actually exist" but can be measured in aggregate. /* PLUG: http://plug.org, #utah on irc.freenode.net Unsubscribe: http://plug.org/mailman/options/plug Don't fear the penguin. */