14 ideas
| 21563 | The 'no classes' theory says the propositions just refer to the members [Russell] |
| 21565 | Richard's puzzle uses the notion of 'definition' - but that cannot be defined [Russell] |
| 21564 | Vicious Circle: what involves ALL must not be one of those ALL [Russell] |
| 21110 | An understanding of the most basic physics should explain all of the subject's mysteries [Krauss] |
| 21105 | In 1676 it was discovered that water is teeming with life [Krauss] |
| 13304 | Learned men gain more in one day than others do in a lifetime [Posidonius] |
| 21109 | Space itself can expand (and separate its contents) at faster than light speeds [Krauss] |
| 21104 | General Relativity: the density of energy and matter determines curvature and gravity [Krauss] |
| 21107 | Uncertainty says that energy can be very high over very short time periods [Krauss] |
| 21106 | Most of the mass of a proton is the energy in virtual particles (rather than the quarks) [Krauss] |
| 21112 | Empty space contains a continual flux of brief virtual particles [Krauss] |
| 20820 | Time is an interval of motion, or the measure of speed [Posidonius, by Stobaeus] |
| 21108 | The universe is precisely 13.72 billion years old [Krauss] |
| 21111 | It seems likely that cosmic inflation is eternal, and this would make a multiverse inevitable [Krauss] |