Mach's principle is a hypothesis first stated by Ernst Mach in 1893, which states that:
"The inertia of any system is the result of the interaction of that system and the rest of the universe. In other words, every particle in the universe ultimately has an effect on every other particle."
... The band allowed sharing of tapes of their shows, as long as no profits were made on the sale of their show tapes.
Starting in 1991 the Grateful Dead h ...