Ken and Dawn return in today’s podcast to answer more listener questions. Back at the beginning year, Ken and Dawn hosted their first Ask Me Anything episode. In that episode, they promised not to wait another three years and 83 episodes before once again addressing listeners’ questions. A steady stream of new questions have poured in since that first Ask Me Anything episode. Today, Ken and Dawn take turns answering questions about exogenous ketones, daily allowances of protein, healthy fats, black holes, long-duration space flights, decompression sickness, the future of AI, sloppy science, and much, much more. Show notes: [00:04:13] Dawn starts the episode with a listener question for Ken, which is in regards to the Valter Longo interview, episode 64,and the Stuart Phillips interview, episode 84.The listener became confused about protein intake because Longo said that more than 100 grams of protein a day accelerates aging, while Phillips said that the recommended daily allowance for protein is too low. After going online to get some clarification about the right intake of protein, the listener became even confused and asks if Ken could provide some insight and clarity on the issue. [00:08:40] A listener asks Dawn about her research on exogenous ketones. [00:09:44] A listener wonders if Ken has read the 2017 paper titled, “Is Sociopolitical Egalitarianism Related to Bodily and Facial Formidability in Men,”and if so, to share his thoughts on it. [00:11:52] Dawn reads another question addressed to Ken about the utility of a paper out of Harvard that appeared in February.That paper described an observational epidemiological study showing a strong association between the ability to do pushups and cardiovascular events. [00:14:49] A listener says he has read one of Dr. Ford’s papers criticizing the Turing Test, and wonders why he let Dr. Epstein off the hook during episode 89 of Stem-Talkwhen the topic came up. [00:16:02] Dawn asks another question on behalf of a listener who asks about Ken’s comments on the previous AMA episodewhere he expressed some reservations about canola oil. [00:19:27] Dawn follows up by asking Ken which oils he favors. [00:20:13] Another listener asks Ken about his recent appointment to the National Security Commission on Artificial Intelligence and wonders what the issues the commission is investigating. [00:20:54] A listener asks Ken about the so called “futurist” types who foreshadow a dark future where AI has a doom-and-gloom effect on humanity at large. The listener asks Ken to expand on his brighter and more hopeful vision of the future where AI and intelligent systems help humanity. [00:22:44] Dawn asks Ken about the data gathered by the European Space Agency (ESA) since the launching of the Gaia mission, which is cataloguing the composition, brightness, positions, and directions of stars in the Milky Way. [00:25:13] Dawn is asked about a paper published in late 2018 in the proceedings of the national academy of sciences that was titled, “Space Radiation Triggers Persistent Stress Response, Increases Senescent Signaling, and Decreases Cell Migration in Mouse Intestine.”The paper suggests that space radiation could pose a risk for the gastrointestinal tracts of astronauts [00:28:47] Ken asks Dawn a question about her involvement in a record-breaking freshwater-cave dive. [00:31:01] A listener, asking another diving questions of Dawn, wonders if there are any biological or genetic factors that might influence individual susceptibility to decompression sickness or the bends. [00:33:04] Dawn is asked for her thoughts on what the research community has learned since Gena Shaw’s 2015 landmark paper, “New Study Suggests Brain Is Connected to the Lymphatic System: What the Discovery Could Mean for Neurology.” [00:36:15] Ken asks Dawn if sleeping position has any effect on the ability of the brain’s lymphatic system to flush out metabolic waist.