We derive the semiclassical evolution of massless minimally coupled scalar matter in the de Sitter space-time from the Born-Oppenheimer reduction of the Wheeler-DeWitt equation. We show that the dynamics of trans-Planckian modes can be cast in the form of an effective modified dispersion relation and that high energy corrections in the power spectrum of the cosmic microwave background radiation...

and indeed many of the other analyses reported in our paper do not suffer from potential bias due to weak instruments. Hartwig and Davies did, however, suggest that we could have used estimates from an external source to obtain less biased results in our MR-Egger analyses. Whereas we agree that this would be good practice in most situations, we do not feel that it would have been appropriate in...

has provoked a lot of interest and comment. For those who haven't read it, how would you summarise the argument? In a nutshell, I argue that psychiatry over the past 40 years, under the dominance of the medical or 'technological' model, has done a lot of harm in the name of helping vulnerable people. Not intentionally, I hasten to add, but as an outcome of taking the medical model too far. Your...