> Physics has not changed much What time frame are we talking here? We're constantly learning about how more stuff works. Physics has had plenty of changes[1]

> Physics has not changed much What time frame are we talking here? We're constantly learning about how more stuff works. Physics has had plenty of changes[1] but perhaps you're only speaking to very specific theories that have not changed such as relativity? In which case yeah it hasn't changed much but there is also a disconnect between relativity and quantum mechanics and it seems a pretty large majority of scientists think there is a unified way to make them one theory so obviously our understand of both is not entirely accurate (though our observations with relativity are pretty spot on). > Where do you go from there? Hard to say since I'm not a physicist or hardware engineer but I've seen lots of interesting talks about scaling down more and more when we didn't think we could before. Ultimately there may be a size in which we can't get any smaller with conventional processor architecture but that doesn't mean we can't build new ones. Optical based processors, built in a 3D way, allows for far more overlap than transistors since light passing through each other doesn't interfere with one another[2] so that looks really interesting. Quantum computing also promises great speed increases which perhaps could eventually be scaled down to closer to quantum sizes than traditional computing. I think everything is getting much harder than the breakthrough before it but we seem to keep going and I would be surprised if we end up completely stopped due to hitting some physics block. We'll find a workaround! [1] http://quantumfrontiers.com/2013/10/23/the-10-biggest-breakthroughs-in-physics-over-the-past-25-years-according-to-us/ http://quantumfrontiers.com/2013/10/23/the-10-biggest-breakt... [2] https://en.wikipedia.org/wiki/Optical_computing https://en.wikipedia.org/wiki/Optical_computing