Seeing how I got quoted, here's yet another little story. A certain vibes player, used to work with a sax player who didn't read or do theory that well, but had great ears, but the vibes player could still tell when the sax player was uncertain of what was going to happen next. Once he caught the first note the sax player was back in control.
Also
@Bernie so you know the tune by ear and where it goes to next. How about when you get a 'Pro' pianist that wants to use lots of chord subs and improvise on the changes themselves? I'm sorry but you can't play/learn jazz improvisation with no theory. Most players find that as there general playing improves over time so does there ear,
yes to the point where they know where certain changes are going.
For individuals blessed with a good ear for music to start with then perhaps the ear path might be one to have a look at, for mere mortals like the rest of us, I for one like to know what I'm playing. Both will take time to develop to a good standard, but the theory path at least allows me to talk to other musicians in a language that is universal. So if a keys player says he would like the try the 'bridge' up a minor third, or singer wants the song down a 'semitone' I have an idea of what is happening.
From a personal point of view I picked up a sax for the first time about 5 yrs ago, so began learning to read/theory. What you hear is where I am today, when I post something, good, bad or just OK. I'm just
having a lot of fun and the wrong notes are getting fewer.