“Hot mixing” vs. “cold mixing” — the modern rediscovery

10:06they're going to be the reason why the Roman concrete actually can self-heal. >> Okay. >> Okay. It's by design. Okay. >> It's not a defect. Okay. >> Okay. >> Okay. >> So, the central problem, right? >> Who's right? Yeah. Right. >> Right. Hot or cold? >> Like like who is right? Who's the who's the guy who actually can do it? Um like is is it the hot mixing or is it the cold mixing? >> Right. >> Can I take a guess? >> Yeah. >> Actually, no. Go ahead. >> It's the MIT guys. [laughter] It turns out It turns out the original author >> 2,000 years ago [laughter]

10:47>> I think got it wrong. But there might be a good reason for it. and we'll get to that at the at the end. >> Okay. >> Okay. >> So, >> the paper comes out um last month. >> Mhm. >> In nature communications, >> photo number 12.