Does a provisional patent application allow us to present our tech publicly?

A Saavy investor will know that a Provisional Patent Application (PPA) is easier/cheaper to file, does not get examined, and must be converted to a Utility patent within 12 months...thus a PPA is less impressive that having filed a utility patent. While the PPA gives you some security in the sense that you have your priority date, you should always file the utility patent asap if you have the means because it will provide somewhat more of a deterrent effect and security (depending on how thorough the PPA is).