Earlier quoted context omitted.
It’s widely known but many pros consider it to be of low importance compared with “hand reading”, which is more about putting someone in a play-style bucket based on the hands you observe and then deducing what hand range they are likely to hold from their actions in the hand up to that point. Physical tells are typically considered as unreliable compared to this unless they are really obvious. Amateurs tend to overe…
So it’s perhaps more like there’s a local minimum before you reach the global maximum.
In elite games, you would assume everyone is an expert at hand reading, so it makes sense that physical reads would become more important.