How do I know? By reading and understanding the original post and comments. The OP was given a suggestion that he revert to the basic technique of pitch matching. He then compared that to being told to learn how to read by writing blogs every day. That analogy is absurd and inaccurate. A correct analogy would be learning to read by learning the alphabet, and then systematically studying the phonetic structure of the language.
I spent ten years teaching Russian to people with no prior knowledge of the language. I worked with a small group of students six hours a day, five days a week, and I never had a student who didn't need several months to get a basic handle on the sounds of the Russian language. And they were all motivated. So, yes, I think I am qualified to be a bit judgmental about the amount of effort required to master a skill like this.
You were teaching people who could speak to speak Russian, they weren't people who needed to learn to speak.
I could sing along to a song all day, be in and out of the correct pitch and never know. When I record my vocals I think I sounded in key, at least I can get a take that has nothing that sounds nasty to me, but then I run pitch correction software on it, and everything warbles into something from a sci-fi movie! If I can't hear whether or not my voice is even in key or not I can't practice singing in key because I don't know! That's the point!
Let me explain - If I play a riff so much that I'm familiar with it, and then I play it and I hit the wrong note, I hear that I played a wrong note - so I know I'm not tone deaf, and I can hear that I played too high or too low. If you are not tone deaf, you are able to learn relative pitch, however I have 0 natural relative pitch, while most people appear to have at least some - just as some people have some ability to kick a ball at a goal and score, without training (while some are naturally amazing players and a very few miss the ball and fall over every time). Most people who pick up an instrument are people with a decent natural level of relative pitch, rather than people who start from almost nothing because it is much harder and takes a lot more perseverance (because I cannot match notes I have to find lots of ways around the fact), and so most likely the people who you have taught have SOME level of ability to KNOW when their voice is in key with the note, or if the note they play on the bass is the same note as the note that you just played, even if they aren't able to do much more than that. I want to be able to reach that basic level.
Let's use a closer analogy - new bassist "I want to know how to play bass!"
Teacher "Okay, play A# on the first fret on the third string, it's very basic, then open it to play A"
new bassist "So, do I put my finger on the metal things or in the middle? They're the frets right? How do I hold this?"
The student here is wanting something far more basic than the teacher expects, but if he was to respond "you clearly have decided that you can't and you don't want to put the effort in" - I put it to you, good sir, that you either don't understand what I'm asking here and brush it off as my laziness (though why would I come here and ask for help from musicians if I didn't want help with this?), you're unable to grasp what I'm asking, well, that's fine but there is no need to respond in that way - as a teacher, you should look at the needs of the student, not write that student off because you don't know how to respond to them.
The advice you gave is something that is good, once I can tell whether or not my notes are correct. I sing along to everything, and I assume I'm in key because I don't sound off to myself, but I honestly cannot tell if I am or not. I need to acquire that ability in order to use the exercise that you suggested.
There is a possibility that you suffer from
Invalid Link Removed But I wouldn't assume it; you would have to be
tested. Try the links and see what you find out. If you're not "tone deaf," then you should probably find a patient music teacher, or an app that allows you to practice. I like
Functional Ear Training
I'll look that app up, thanks! I used to think that I must be tone deaf and looked into congenital amusia - I thankfully am not tone deaf, but I feel like I am! I can hear the difference between tones, I know when a pitch changes up or down (but not by what interval), I just don't have the ability to match the same note played on two different instruments, not even in the same octave! That said, if I play drones, the same note across octaves, I can hear that every note is the same across the octaves, as I'm playing it. If I was to listen to a succession of notes in other octaves and try to recognise which one was the same note an active higher/lower, I can't do so. I can check if a guitar is in tune by hitting the 5th fret and then the higher strong open and hearing if it is right, but I cannot tune a guitar using that as reference. I have tried and I have broken so many strings in the process

