Myth, myth, and more myth. The only reason you get higher from smoking is because you ingest larger concentrations in shorter a amount of time. Read that as anything that travels trough your lungs gets dumped directly into the bloodstream. Eating cannabis on the other hand is only going to put THC into your system at the rate at which HCl has broken down the material. This may be sooner or later depending on whether you have ate or not, will always be slower than smoking, and you just might pass some of it undigested altogether.
That's right turds full of hash balls. Who wants to smoke a turd?