Journals publishing mouse models with no phenotype - (Oct/27/2011 )

Agree; I didn't mean that I believe really all of them do have a phenotype, and in the quotes by said people I understand it to be more a figure of speech than an accurate prediction or whatever. Although I think this is, as said above, probably something nearly impossible to find out, because how do you wanna prove that every single knockout induces some change in some condition ? With time more and more phenotypes will be known because they pop up somewhere (sometimes unexpectedly). The reverse (that there is indeed no effect) would be even more impossible to prove.

Well the important conclusion is anyway that we do miss out on a lot, as you said.