Woster: Just because you can do something doesn’t mean you have to do it

Woster: Just because you can do something doesn’t mean you have to do it

The first time I heard the Grateful Dead song, “Dire Wolf,’’ I took it to be a flight of fancy, not a story that mentioned an actual creature. I heard the song ages ago, long before I learned that a species called the dire wolf once existed on this planet. The dire wolf was a big critter, 25 percent larger than the wolves of today, according to one source. The same source said dire wolves could be more than six feet long and weigh as much as 150…