Dave Johnson
54.2K posts

Dave Johnson
@tractorbadger
Against all disproportionate and irrational government decisions in relation to Covid, and the terrible destructive effects on a younger generation. I/Me/Mine


@DeborahMeaden @tryingattimes I'm not a climate change sceptic and I know that a few thousand acres here and a few thousand there of even "good" wheat land won't affect the price of bread, but when they are taking the best potato and veg land for this, it starts to impact food inflation.





@ClarkeMicah Yes it genuinely fascinates me. I’m not taking the mick. Had you been born in Pakistan it would be a different prayer that you’d be recommending as you’d probably be Muslim. How convenient that you just so happen to be born in the right religion.


We're not going to travel beyond the solar system, according to Leonard Susskind. And neither are aliens, coming to visit us. We may not be alone, but we are stuck here for, essentially forever. 1. The nearest star is 4.24 light years away. The fastest spacecraft ever built would require 6,600 years to get there. 2. Surely we can just build faster spacecraft. The problem is to get to anywhere close to the speed of light, we need exponentially more energy. 3. Chemical rockets will just not work. Even fusion rockets won't work. Even 10% of the speed of light is not achievable. The Tsiolkovsky Rocket Equation prevents it. 4. Interstellar dust becomes hand grenades when traveling anywhere close to the speed of light. Ships break. 5. Space radiation will kill us over the time need to travel interstellar distances. Impossible to protect without massive shields, which require massive energy to accelerate and de-accelerate.































