Yep, I laid the story out somewhere here...
Condensed version: went to concert where there were velvet seats and chandeliers and of course ushers (Taft Theater, Cincinnati). No way to smoke and no way to leave and return. Had about an oz of Columbian in my pocket. Damn....
We got two of those little 'school milk' type containers with orange drink and headed back to the seats. In the darkness I got the bag out and we each popped a big nug in our mouths. Yep, seeds and all and started chewing. Kinda nasty.
Yep, we were blasted by the second set. (back when bands would do an intermission).
Believe me or not, solvents are not required. Your body will process lots of stuff and weed is one. Bile from your liver is a surfactant and is used by the body to work on lipids and lipid soluble products you ingest. Yeah, that includes THC.
Very finely ground material can be stuffed into empty caps that are available at the health food stores and pharmacy. This avoids having to 'taste' the material. (after chocking down that Columbian I just don't like the taste of weed and can't bring myself to ruin a batch of brownies with it's taste)
How much do you have to eat? Ingestion is not an economical way to consume. Doesn't matter how you eat it. The fact that it's gonna be a 5 hour ride compensates a little.
In conclusion, yes you can eat it raw. No solvents required. Urban myth that they are required
... based on 30 years of real world experience.