HighlyEducatedScholar, I didn't take it as an insult.
First, in the case of cannabinoid saturation you are wrong. When there is more cannabinoids than the body can handle it will make LESS receptors(this is called down-regulation)which in turn means your body will send the rest of the cannabinoids to the liver, kidneys, and intestines to be detoxified & excreted while some goes to the fat cells to be stored. Also, the metabolites play a role in raising your tolerance which is why having a healthy liver and eating a lot of green leafy vegetables as well as brocolli helps keep your tolerance low because these foods helps your liver make enzymes that detoxify chemicals. Exercising to the point where you sweat also helps as this helps you get rid of the metabolites. Eating a lot of fiber, specifically soluble fiber, also helps as well because this speeds up excretion and it attaches to fat and bile easily which means your body will use it's stored fat to make more bile and being that some the cannabinoids are stored in the fat cells it will go along with the fat which means less metabolites to be made which means your tolerance will be lowered.
Having too much of a substance than your body can handle and lowering your tolerance is why drug addicts need the drugs just to be "normal", it's because they lowered their receptors so much by excessive use that they are worse than they were when they never used drugs and need the drugs to release chemicals in the brain to attach the little receptors they have to feel "normal". The don't get high anymore.
Second, yes different substances in cannabis do have different "highs" but your method of ingestion will go towards one more than the other due to how the body works. You will get more of a" body high" due to the explanation I gave and more of a "head high" due to bypassing the liver as well as the intestines which means the cannabinoids are not really getting contact with the lympathic system and therefore only have a few places to go and the brain is the major one while the other organs are secondary due to the cannabinoids traveling throughout the body.
http://www.medterms.com/script/main/art.asp?articlekey=24471
Downregulation: Reduction in the number of receptors on the surface of target cells, making the cells less sensitive to a hormone or another agent.
Here's an example using insulin:
http://en.wikipedia.org/wiki/Downregulation_and_upregulation
The process of downregulation occurs when there are elevated levels of the hormone
insulin in the blood.
http://www.ncbi.nlm.nih.gov/pubmed/3032669
A major metabolite of delta 1-tetrahydrocannabinol reduces its cataleptic effect in mice.
Abstract
The results described here demonstrate that THC-induced catalepsy in mice can be substantially inhibited by the prior administration of delta 1-THC-7-oic acid, the major metabolite of THC in most species including humans. This raises the possibility that the intensity and duration of action of THC may depend to a large degree on the levels of this metabolite at the sites of action.
Here's a thread where I discussed this more:
http://fuckcombustion.com/threads/tolerance-tips.2876/