Glenn,

I agree with your point. Most of the time I do not pay much attention when ground dwellers talk about tents.

I carry a TYVEK tarp or a TYVEK tent (SubLite) in the Grand Canyon because it can get very hot under silnylon in the hot sun. A silnylon tarp is just about useless for shade.

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"In theory, theory and practice are the same. In practice, they are not."
Yogi Berra