It would likely depend on the scope and scale of the idea, and how you go about proving that you can be successful at implementation. If your idea is geared ar

It would likely depend on the scope and scale of the idea, and how you go about proving that you can be successful at implementation. If your idea is geared around a web-app, your chances are probably pretty small. It's easy to put together the basics of a demo, and anyone who did not put in that minimal effort would likely be met with skepticism. If your idea is something like a complex new mesh networking algorithm and chipset... well, most investors wouldn't expect you to have developed a new ASIC out of your own pocket ;) However, you would likely need a very solid track record in the technology and other applications of it (eg: work at another company, research lab, etc.).