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## Main Question or Discussion Point

I can sort of understand working in a system of units where, say, either [itex]c[/itex] or [itex]\hbar[/itex] takes a numerical value of one. But I read a paper today where BOTH [itex]c[/itex] AND [itex]\hbar[/itex] were set to be 1. I confess I haven't thought about it very carefully...but could someone please help me understand how you can get by with that?