Even more: in practice, in the engineering world, everyone shares what they know because they can only benefit from doing so. So even if you can keep secrecy at first (which might actually make sense at the very beginning), chances are at some point you will start benefiting much more from openly sharing what you have. I'm not saying that hypothetically, that's what actually happens in the engineering community at large. I benefit myself from it lavishly and give back as much as I can in return. It's like zapping! :)