Of course not, you use it as efficiently as possible to do the thing you used public transit to actually _get to_. The comment I replied to claimed transit sys

Of course not, you use it as efficiently as possible to do the thing you used public transit to actually _get to_. The comment I replied to claimed transit systems don't sell unlimited-ride passes. I was pointing out that some of them do. What you're arguing is they wouldn't have the capacity to handle it if every person bought such a pass and immediately ceased all activities other than riding transit 24/7, which may well be true, but is also a non sequitur. Though since you ask, it would be a bit difficult for me to "maximize" use of my Caltrain pass in the way you're suggesting, since going "all the way to the end of the line to minimize your cost per mile, then walk back to your actual destination" is not realistic -- the line is ~80 miles long.