humans travelling at light speed????? just a little thought experiment. we know it is ludicrous to suggest that humans can travel at "c" because we have mass and it takes infinite energy to travel at c if you have mass. however, does this work for relative velocities: let us assume you are in a closed dark room standing completely still; suddenly a flash-light at the end of the room is turned on. we know that the flash light is expelling photons that are able to travel at c. my question is: with respect to each photon, what velocity do you (standing still) travel at?