CincyBengalsFan once bubbled...
Not really. It's pretty much that simple. It's not as easy as running a recompression chamber but it works. You must follow a table though or computer.
I beg to differ with you, sir! None of the published (i.e. read here "accepted") methods of IWR involve just jumping in with another tank. (Please see "Diving and Subaquatic Medicine" by Edmonds, et al for reference).