Is 70/70 really the “ideal” temperature/humidity mix?

Although “ideal” temperature/humidity for cigars is supposedly,
70° temperature / 70% humidity, your cigars are actually better
off at a cooler temperature. 62° to 65° is quite acceptable
and will help prevent mold. Mixes of 62°/72%, 63°/68%, even
65°/65% are fine. If you can maintain 70° / 70% with no problems,
more power to you. Just remember that the lower the temp, the higher
the humidity you need to maintain proper moisture content. The higher
the temp, the less humidity. In general, keeping your humidor in a
relatively cool place is a good idea.