Athletes are like comedians. For both, timing is everything.
I played a number of different positions during my football years, but I was never a quarterback. I’ve always been amazed at the ability of quarterbacks to throw long passes to receivers that are moving. And moving very quickly! The timing has to be perfect, and the quarterbacks have to adjust their passes according to each particular receiver. A long pass may stay in the air for two seconds, and a wide receiver that’s running at full speed can cover 20 yards in two seconds. It takes perfect timing to get the ball to that receiver. And if the timing is off by just a little bit, it’ll be overthrown or underthrown, and possibly intercepted. I had the easy part, being a receiver. All I had to do was run my prescribed route; the quarterback bore the responsibility of getting the ball to me.
In volleyball, the responsibility for the timing of a high set lies with the hitter. The timing of an approach, jump, and hit are just as precise as a football pass pattern. The goal, of course, is to contact the ball at the highest point possible. That sounds simple enough, but if you watch young players trying to learn this for the first time, you can get a better sense of how difficult it is to do. And we experienced players have long forgotten just how difficult it really is.