My understanding is that crushed rock is inferior, as it binds too much water that weakens the concrete.
43 karma · joined October 22, 2015
With DAB, two time-delayed signals (either reflections or multiple towers transmitting the same data-fountain) will enhance the signal. This means that you can have fewer towers.
Isn't it fully possible that most people are better than the average? Most people e.g. have more arms than average.