Publicly shared intelligence is the gathering and analysis of information of political value that is openly available to the public and able to be tested. This is a potential alternative to the sort of secret intelligence normally carried out by government agencies. Desirable features of publicly shared intelligence can be determined by analogy to other open knowledge production systems, including science and open source software. The case of the Shipping Research Bureau illustrates the potential of publicly shared intelligence. We outline features of a publicly shared intelligence system, including implications for public education.