“There is a road, no simple highway

Between the dawn and the dark of night

And if you go, no one may follow

That path is for your steps alone”

            Ripple by the Grateful Dead

The head of network services where I used to work had calendars from the 70’s, 80’s and 90’s covering his wall with well over a thousand dates circled in red. Each one represented a Grateful Dead concert he had attended. On occasion, I would catch him leaning back and staring at them all glassy-eyed. He’d ask me to pick a date, any date ..and he could tell me not only what city they played, but how he managed to get there, who he was with and what songs the band played that night. You can verify the playlists online. We’re looking at a period of time spanning 3 decades. I have a hard time remembering what movie I saw at the theater last week.