Short answers, pulled from the story.
The dehousing paper, also known as the Lindemann memorandum or Cherwell memorandum, was a document written by Professor Frederick Lindemann. He delivered this memorandum to Prime Minister Winston Churchill on the 30th of March 1942.
The area bombing directive issued on the 14th of February 1942 authorized the systematic destruction of German cities. This policy aimed to destroy about 30% of housing stock in Germany's 58 largest cities.
The Butt Report revealed that less than one third of sorties flew within five miles of their target. Actual accuracy was even lower at about 5% when excluding failures due to weather or equipment issues.
Professor Patrick Blackett wrote that the dehousing paper overestimated achievable results by 600%. He served as civilian Director of Naval Operational Research since January 1942.
Research published on the 8th of April examined bombing effects on Hull and Birmingham conducted by Professors Bernal and Zuckerman. The study concluded there was no measurable effect on public health in both locations despite anxiety among residents following raids.