Zero or low carb, or not low carb.
Fatty meats or lean meats.
No dairy or minimal sporadic dairy (or lots of dairy).
Paleo man ate mostly meat or he didn't (ate meat sporadically - only at successful kills).
Organ or no organ meats.
The fatty meat/lean-meat question is more difficult to answer than one would think. Judging from data gathered re hunter-gatherers and palaeo cavemen, a very wide variety of animals were hunted some small(and therefore lean) and other larger, fattier animals like the aurochs(ancestors of cattle) and horses. Then there's the fact that winter forces animals to starve and thereby reduce their fat-layers during that season. Now, there are other complications(I believe older animals gain more fat-layers?) but generally speaking, I don't think it matters as long as one is eating a mixture of lean and fatty meats - eating 100% lean meats all the time year round is likely a bad idea, especially if on zc.
No dairy or minimal dairy:- I have been beating the anti-raw-dairy drum for years as I kept on noticing that those people who consumed the most dairy also reported the most devastating of health-problerms(which they chose to call "detoxes" but weren't as they invariably coincided with dairy-consumption) - and that those who gave up all dairy reported far fewer side-effects, if any. Dairy has appalling side-effects re f**king up the natural hormone-levels of the body via its own cow-produced hormones, then there are the addictive opioids, the huge imbalance in calcium to magnesium( too much intake of calcium into the body blocks uptake of magnesium , leading to magnesium-deficiency).Magnesium is essential for the central nervous system's maintenance.
Organ-meats:- If you look at the literature(and wildlife movies etc.), you will notice a common element:- the wild animals generally go for the organ-meats first by preference and then eat the rest. If they're not hungry, they'll sometimes leave some of the muscle-meats behind, storing them for later, but eat the organ-meats then and there.More modern hunter-gatherer tribes have the same preference re organ-meats, with pregnant women using them(according to weston-price) to ensure fertility/childbirth works out well for them. So there's no reason to suppose organ-meats weren't eaten and preferred by palaeoman .Plus, numerous anecdotal reports on the various forums indicate tha eating raw organ-meats as well as muscle-meats ensures a faster recovery-rate on a RVAF diet than if one just eats raw muscle-meats.
That said, some zcers do have a point in claiming that organ-meats are only 10% of all meats in a body so there's no need to overindulge.
Re eating all-meat or no-meat:- Well, my own experience with zc was a disaster. Tried 3 times and failed miserably. By the 6th week I'd be a hospital case so had to give up(I did all the right things re eating plenty of raw fat etc. - my testimonial is on the rawpaleodiet.com website)Having checked various studies and experiences:(eg:-
http://www.ncbi.nlm.nih.gov/pubmed/12535749I tend to be sceptical of the notion that zc works for some, though it's pretty clear that others seem to be doing fine right now on rzc. Other than the health-issues, my sporting performance collapses while on rzc, so that's a big minus. Plus, being able to eat raw fruit in social settings makes things so much easier for me as that is considered more socially acceptable than eating raw meat in front of SAD-eaters. As a ZCer, given occasional travelling etc., I'd be forced to make pemmican, instead of eating fruit (when grassfed, raw meat-sources are scarce), which would cause problems for me given my own major issues re cooked animal fats(raw fruit, by contrast, works fine for me as long as I don't take it to fruitarian levels).
Re palaeo lifestyle:- I'm not terribly interested in sleeping outdoors on the hard ground etc. I'm too urbanised. But, admittedly, it does have its appeal.
