I recall being taught (public school system) roughly 20 years ago that "we used to think salt was good for countering dehydration if you were stranded in the de

I recall being taught (public school system) roughly 20 years ago that "we used to think salt was good for countering dehydration if you were stranded in the desert, but now we know that plain water is better." This isn't necessarily false (water is likely better than pure salt), but I wonder if we threw the baby out with the bathwater at the time as far as salt was concerned.