They should state with absolute clarity what they think should immediately happen instead of meekly asking two questions.
FFS
Containment attempts that.
“Herd immunity” is an experiment that the UK government is going to carry out on its citizens causing massive loss of life for no good reason at all.
We make these decisions constantly. You make these decisions every time you leave the house. People die every day from things we could have prevented if we had the inclination.
If the goal is to save as many lives as possible, why are driving and alcohol permitted? Because of personal freedom and the economy.
Treating this pandemic differently would be emotion driven.
My reading of the letter is that it challenges the scientific advice, as it has been communicated in the media, and seeks to clarify the "wiggle space" politicians have to work with.
They asked for two specific actions: more social distancing and releasing modelling data behind decisions.