Climate change Intelligent Design Philosophy Science

Sabine Hossenfelder says predictions are overrated; Rob Sheldon responds

Sheldon: … ironically, most of Sabine’s blogs are about the poor predictive power in particle theory, but in this blog she feels she has to reverse herself to defend the good name of global warming. My advice to her is to stick with what she has first-hand knowledge of, because 2nd-hand knowledge always suffers from authoritarian bias.

Cosmology Fine tuning Intelligent Design Physics

Rob Sheldon on why string theory’s inflationary cosmos is a degenerate research program

Sheldon: The inflationary proposal has always been ad hoc. That is, a huge, faster-than-light expansion of the universe was proposed as a solution to the “flatness” problem, where the universe expands at a rate just sufficient to counter the gravitational attraction, where “just sufficient” means one part in 10^60 power. The inflationary model was invented to solve this fine-tuning problem.