Earlier quoted context omitted.
this is why i always come to hacker news for the expert opinions. thank you for being critical yet optimistic.
You don't know if the opinion is expert. You don't know who that person is or what credentials they even have. Blindly trusting something that sounds right is a terrible way to inform yourself.
Given MJ's extraordinary claims and lack of detail, I thought the GP's response was well-calibrated, especially given MJ's unfortunate choice to lean into vaguely implying this has 'medical' utility, despite providing zero evidence (or even plausible theory) their approach could ever have diagnostic value greater than Butterfly's FDA-approved, handheld, full contact USB pocket scanner which is available now and plugs into a mobile phone. They are using 40 of the exact same transducer chip (designed for full contact use) from 200-400 times farther away. You can use the existing full contact Butterfly scanner today and just move it to 40 different angles. It would take a couple minutes longer, provide vastly greater resolution and is proven to have diagnostic value.