Speaking Of Reverb...

[kenposurf]

"Aaron, I can imagine no way in which this thing could be considered
anywhere remotely close to safe. All I know is I spent six hours in
there and I'm still alive... You still want to do it?
[His first experience in the machine] Maybe it was the
dramamine kicking in, but I remember this moment in the dark with the
reverberation of the machine. It was maybe the most content I've ever
been..."

From the film: