I guess there’s a difference between a mathematical proof and practical, real life truth. Multiple studies have looked for transmission across tens of thousands

I guess there’s a difference between a mathematical proof and practical, real life truth. Multiple studies have looked for transmission across tens of thousands of unprotected penetrative sex acts. There’s also a solid theoretical backing to the concept - it lines up with how we think HIV transmission works. So it’s a bit like saying maybe there’s Bigfoot out there. Sure, maybe, but we have a pretty good reason to think there isn’t. For practical purposes no one should assume big foot is out there.