Fatigue Study
The European Transport Safety Council conducted a study on pilot fatigue 2 or 3 years ago. It represented "the concensus of scientific opinion in Europe". It also shows that the Sub part Q, about to become law, allows exccessive fatigue.
It is extremely thorough and has similar findings to the Aussie study mentioned earlier -as you would expect from science. Both have prodeced a fatigue/alcohol relativity scale.
The ETSC invited a wide audience to attend an analysis and discussion forum of the report. None of the invited airlines came but the regulators did - including the CAA.
So, it is not knowledge about fatigue that is the problem. It is now possible to produce regulations based on Science.
However, the findings are inconvenient for the airlines and the industry funded CAA have taken no action and the politicianbs will vote in ignorance or indifference.