Okay, this may seem like a goofy question, but I'm trying to make sure I understand the context or finer points of some of the threads. Anyway:

When the members talk about a a 72-hour bag, a BoB (bug-out bag?) and/or a truck bag, are we essentially talking about the same thing?

Or is a BoB considered something you can throw on your shoulder or back right away and carry for miles?

I ask because I guess I would consider my truck bag my only BoB or 72-hour bag, and I gotta tell you ... even though it's only a 10" x 20" Jansport shoulder duffel, that little sucker's got some weight issues!

As a matter of fact, I'm thinking of adding a daypack to the gear in the truck, 'cause if I were to need to hoof it, I'd have to choose selected items from the truck bag, 'cause the whole darn thing ain't going to lug very well.

Of course, if the situation involved two healthy people, I suppose some sort of daypack or backpack would be very nice, cause then we could split the load.

Anyway, I supposed my basic question is, "Are BoB and 72-hr and truck bag really the same thing, or are there differences I should be thinking about?"