Chat with Greg Fridman

Round 5 of the Gloriously Dumb series. I asked AI to pretend it's a YouTuber and ask me the dumbest "Can Plasma?" questions it could think of. Today's category: Existential & Absurd. Five questions. One of them is actually a yes, and it's a big one. ⏱️ Chapters 00:00 AI pretends to be a YouTuber and asks me gloriously dumb questions 00:14 Round 5: Existential & Absurd, five questions 00:26...

The question I get constantly on LinkedIn and from high school and undergrad students: should I get a PhD? It's 2026. If you're asking me, my answer is no. Because you asked. Here's the long version, from someone who has one and doesn't regret it. ⏱️ Chapters 00:00 Should I get a PhD? It's 2026. 00:21 My answer: no. Because you asked. 00:48 The 3 questions: why do you want it, what will you do wit...

Next in the "Can Plasma?" series: can plasma stop metal from rusting? Yes, in a few ways. But air plasma is a strong oxidizer, so it can also make rust worse. Three parts: plasma as a coating tool, plasma for growing protective layers, and the catch. ⏱️ Chapters 00:00 The question: can plasma stop rust? 00:04 Three topics: coating deposition, surface prep, and the catch 00:25 Plasma to stop rust 0...

Episode 150. Thanks for sticking with the channel. Next in the "Can Plasma?" series: can cold plasma kill bacteria on your skin without burning you? Yes. Three parts: why it stays cool, why bacteria die while your tissue survives, and where the safety limits really are. ⏱️ Chapters 00:00 The question: plasma on skin, bacteria die, no burn? 00:16 Three things to cover 00:28 Why plasma stays cool 00...

Next in the "Can Plasma?" series: in a recent episode I said plasma datacenter cooling isn't practical. LinkedIn picked up on it. Comments, messages, emails, phone call. All telling me I'm wrong. Let me defend my position with specifics. ⏱️ Chapters 00:00 Recap: I said plasma cooling of server farms won't work 00:15 LinkedIn disagreed. Loudly. 00:30 Let's deconstruct this 00:32 Ion wind: asymmetri...

The #1 question I get from students, high schoolers, and undergrads: "What kind of job can I get in plasma? Isn't plasma just welding?" Short answer: no. And semiconductors alone have 9 layers of plasma jobs. Big thank-you to the Thin Film Engineer on LinkedIn, who makes the clearest plasma-industry graphics I've seen. Follow that account. The specific image I use in this video: https://lnkd.in/p/...

Next in the "Can Plasma?" series: can plasma be invisible? Yes. In fact, some of the most important industrial plasmas are. Time to walk back my own "see it and hear it" rule from a few episodes ago. ⏱️ Chapters 00:00 The question: is plasma always loud and visible? 00:05 Not really. The important cases usually aren't. 00:12 Three points: why we see plasmas, invisible cases, why it matters 00:21 N...

Next in the "Can Plasma?" series: I just got a hot tub and it smells like bleach. Can plasma replace it? Same job, different chemistry. Let's talk about where plasma already competes with bleach and where bleach still wins on cost. ⏱️ Chapters 00:00 The question, from my new hot tub 00:09 The devil is in the details 00:12 Three points: same job different chemistry, where plasma competes, where ble...

Next in the "Can Plasma?" series: can plasma work without any heat? Yes. And it's the whole business case for most modern industrial plasma. The trick is timing. ⏱️ Chapters 00:00 The question: most plasma is hot. Can it work without heat? 00:11 Three points: thermal vs non-equilibrium, how we generate it, and the business case 00:29 Callback: there are 4 temperatures in a plasma 00:41 Translation...

Next in the "Can Plasma?" series: can plasma only kill the bad cells and leave the good ones alone? Selective toxicity is one of the holy grails in medicine. Plasma has a door cracked open on this problem, and my story with it goes back 25 years. ⏱️ Chapters 00:00 The question: bad cells only, good cells alone 00:18 Three points: mechanism, research status, and why "selective" is not "simple" 00:4...

Next in the "Can Plasma?" series: can plasma sterilize a whole room? Yes, we've designed the systems. But there are three stories in this episode that will change how you think about the answer: Obama's MRSA problem, why vodka is the ideal plasma additive, and why doctors don't wear ties anymore. ⏱️ Chapters 00:00 The question, scaling from wound to room 00:15 Three parts: how to scale, what plasm...

Next in the "Can Plasma?" series: can plasma make you young and beautiful again? Yes, superficially. And I'll share why deeper down, I don't want it to. ⏱️ Chapters 00:00 The question: youth and beauty 00:13 I'll give you my opinion at the end 00:23 Not blood plasma. Not platelet-rich plasma. Electric discharge only. 00:43 What plasma actually does: ROS, RNS, mild UV, high electric fields, sometim...

Next in the "Can Plasma?" series: can plasma make plants grow faster? Yes. I don't believe in magic. But I stumbled into plasma agriculture through a story that looked a lot like magic. Three parts: delivery routes, the biology, and why farmers care. ⏱️ Chapters 00:00 The question, and my admission: I don't believe in magic 00:14 But I stumbled on plasma agriculture through magic 00:23 3 things: d...

Next in the "Can Plasma?" series: can plasma heal wounds faster than pharma? Yes, for scrapes and cuts (not gunshot wounds, not broken hearts). Three parts: the dual mechanism, where it's already approved, and why it's not mainstream in the US yet. ⏱️ Chapters 00:00 The question, and what kind of wound we mean 00:29 A mother of a 5-year-old's definition: scrapes, cuts, capillary bleeding 00:55 3 t...

Next in the "Can Plasma?" series: if plasma is so good at killing bacteria, why do we still have foodborne illnesses from packaged food? Three things: how plasma actually kills microbes, where it's already deployed (including NASA and Campbell's), and why it hasn't taken over the food packaging industry. ⏱️ Chapters 00:00 The question, and the paradox 00:24 3 things to cover: mechanism, deployment...

Next in the "Can Plasma?" series: can plasma make hydrogen without electrolysis? Yes. From water, methane, ammonia, biological waste, diesel fuel, or a mix of soil and cow manure. Plasma doesn't care about the source. On-site generation is where this gets interesting. ⏱️ Chapters 00:00 The question, plus 3 things to cover 00:18 Point 1: plasma cracks water, methane, ammonia, and other hydrogen-con...

Someone recently left a comment on one of my videos: "buddy, that's just what you believe." Yes, sir. Here's exactly how I got there, in three principles, plus two stories about being wrong. ⏱️ Chapters 00:00 The comment: "that's just what you believe" 00:12 Today: my belief system, and how I establish it 00:21 The three principles 00:25 1. Base beliefs on evidence and replication, not authority 0...

Follow-up to my last smoke and exhaust episode. Two viewer questions in one: why is bread exhaust alcohols, and can plasma clean cigarette smoke in your apartment? Yes to both, but cigarette smoke has a surprise you probably haven't thought about. ⏱️ Chapters 00:00 The two viewer questions in one 00:44 3 topics: VOCs, byproducts, and "some crap plasma can't remove" 01:15 Why bread exhaust is alcoh...

Next in the "Can Plasma?" series: can plasma clean a surface without touching it? Yes. Reactive gas-phase species do the work with zero physical contact. Great for organic contamination. Bad for big chunks and metals. Fast enough for Kodak to use on film production at 8 meters per second. ⏱️ Chapters 00:00 The question, and 3 things to cover 00:07 Reactive species vs physical contact 00:20 What pl...

Next in the "Can Plasma?" series: can plasma clean smoke and exhaust? Yes, it's a proven after-treatment technology. Three catches: soot is hard, ozone is a byproduct, and electricity costs more than natural gas. ⏱️ Chapters 00:00 The question, and 3 things to cover 00:10 Non-thermal plasma is a proven exhaust after-treatment technology 00:19 Catch 1: soot and particulate matter 00:29 Catch 2: byp...

A viewer asked how I deal with tangent projects. The ideas that pop up in the middle of what you're actually supposed to be doing. I have a 3-step algorithm I use every day. Here it is. ⏱️ Chapters 00:00 The question: how do you handle tangents? 00:32 The 3-step algorithm: recognize, delegate, delete 01:05 Step 1: recognize which ideas are actually important 01:09 Every intake needs a filter (Slac...

Next in the "Can Plasma?" series: can plasma make nanoparticles? Yes. And a personal story about how I accidentally discovered some in grad school, why my advisor made me drop it, and the focus lesson that stuck with me. ⏱️ Chapters 00:00 The question, and a story to go with it 00:11 The quick technical answer: yes, from many precursors 00:19 Flame and plasma are both good candidates for a reactiv...

Next in the "Can Plasma?" series: can plasma 3D print metal? Yes. And that's just one of the eight distinct places plasma already shows up in additive manufacturing. Quick tour. ⏱️ Chapters 00:00 The question, and the broader ask 00:20 1. Feedstock production: plasma melts wire and atomizes molten metal into fine droplets 00:35 Control atmosphere to reduce oxygen content 00:41 Blend different wire...

Two viewers (one on YouTube, one on LinkedIn) asked closely related questions about the relationship between ionization degree and plasma temperature. Time for a slightly deeper dive than usual. The answer requires realizing there isn't one temperature. There are four. ⏱️ Chapters 00:00 Two questions, closely related, one YouTube, one LinkedIn 00:03 Both about ionization degree and temperature 00:...

Do you ever wonder exactly how the world is going to go to shit? A short break from plasma to recommend two books that changed how I think about that question. Both by Annie Jacobsen: "Nuclear War: A Scenario" and her follow-up "Biological War: A Scenario." ⏱️ Chapters 00:00 A dark question, and a book recommendation 00:12 Plasma and nuclear engineering are often the same department 00:18 Today: A...