I just don't understand people who give advice/information to other craftspeople that they know is wrong. If you don't want to share a piece of information because you feel it is integral to your ability to stay competitive then just say so. BUT to purposefully LIE to another artist is just unethical. I have heard stories from customers and students about other teachers and other craftspeople who give false information on purpose.
For a teacher to do this is so bad. If you don't want to share your knowledge then don't teach. PERIOD.
For a fellow crafts person to do this is unethical, nasty and unnecessary. If someone asks you a question you don't want to answer just say so, politely. If the person INSISTS you tell them, and this happens too, then you have a right to get snippy.
The other side of the coin is an artist OFFERING incorrect advice/info during conversation with the intent to imped the other persons ability to grow and prosper.
We go into this field for many reasons but most of them involve some sort of satisfaction and a better way of life. To sully this by intentionally trying to harm another is beyond belief for me. When you start to feel bitter towards your craft and others who ply it then perhaps it is time for you to seek other employment.. go back to the bank....or wherever you migrated from.
Harm none,
~Nancy