Hang on - the changes to the alcohol regulations (lockouts, etc) are hardly "dreamed up". They're based on the Newcastle laws, which seem to have been very successful. This is the way government should work - trialling ideas on small scale before rolling them out elsewhere. Will it completely stop assaults? Of course not. Should we not change the laws unless they will be perfectly effective? The mandatory sentencing? Obviously stupid - government ignoring all the evidence, whereas the licencing changes are based on at least some good evidence.