I think it's about time for Tater or someone to start a broader thread, with a title like "Beneficial Microorganisms" or "Old Friends Hypothesis" or something similar, else people may get the wrong impression that it's all about the RS instead of the larger picture. I already did that at another forum, so I'm hoping someone else will do that here, if there isn't already one.
Some people also claim that raw potatoes and raw PS (glycoalkaloids), raw legumes (lectins), and even raw plantains (oxalates), are poisonous or at least must be cooked. Others say no, in certain amounts, the least toxic varieties or traditionally prepared fractions are safe or even beneficial. Hormesis is a common phenomenon in nature, in which the toxicity/benefit of foods follows a j- or u- shaped curve where there is a certain middle amount of the food that is maximally beneficial, but too much is harmful (some research indicates that this is the case with butyrate too). Plus, when the starch is separated out, the natural toxin content (and all plants contain plant toxins) is reportedly reduced (for example, for cassava and potatoes, the toxins are concentrated in the skin). I so far have noticed only positive effects from raw starchy or inulin-rich foods like PS, potatoes, green plantains/bananas, tapioca flour, mung bean starch, jicama, onions, garlic, scallions, etc., so I'm currently eating them. A minority of people do report problems from all of them. So it appears to depend on the individual. People who are prone to food allergies/intolerances/sensitivities should be especially careful.
I think it helped me that I had already been eating a mostly-raw Paleo diet, so that I was already getting other plant and animal fibers that may have enabled me to handle raw RS sources better than some. One thing that I think both the RS experimenters, raw Paleo dieters and raw vegans/vegetarians have shown is that humans have a greater ability to tolerate a wide variety of raw foods than had previously been assumed. I suspect that RS (and the animal resistant starch/glycans that DuckDodgers wrote about at FTA) will eventually help some people connect the dots about this and my guess is that we'll see more people experimenting with eating more of other raw foods in the future beyond RS-rich ones. From what I've read, it seems Jeff Leach of the American Gut Project is already eating a lot of plant foods generally raw that most people cook (such as onions and garlic), and he remarked at how little the Hadza bother to cook animal intestines that were not thoroughly cleaned!
Raw and "undercooked" animal foods are still a taboo for many so-called Paleo dieters, so I don't expect a huge shift, just a growing number of mavericks brave (or foolish? ;-) ) enough to try them.
Cold hands and feet are the last to warm up for most people, including me (in my case, just my hands were cold--I think past blood pooling/edema in my feet and lower legs overcame VLC torpor and in my AMA-approved diet days, my feet actually tended to be hot and sweaty despite cold hands). The body protects the organs first and sacrifices the extremities. My hands were still a bit cold when my body temp improved, and now some 9 or 10 months after increasing RS, my hands are warm too. People no longer remark at how cold my hand is when I shake hands with them.
Track your waking and mid-day oral or armpit temperatures to check for early improvement. They should rise to around 97.8-98.2 waking and around 98.6-99.5 mid-day post meal temps (depending on what you've eaten and activity levels) after some time eating ancestral intake levels of RS or other butyrate-generating prebiotics. If the oral/armpit temps never rise, that presumably would suggest that there is a deficit of butyrate-producing bacteria and/or carb intake is chronically very low.
My completely amateur guess is that it's not ideal to stay chronically in either low or high body temps, but instead vary over the day within a natural range. It's also probably not ideal for body temps to dramatically and chaotically spike up and down to high and/or low extremes. My body temp does vary during the day, but it never plummets down into the 96's, 95's and even 94's like it used to in the past.