@gerrit your remark all models are wrong reminds me of a story told in our programming and modeling class on the importance of preventing rounding errors. At our university a model was written to predict/retrodict plate movement, which initially accelerated within a few million years to plate movement at or above the speed of light :-P I think that's when the phrase 'well that escalated quickly' was born :-P
@Spießbürger LOL, for a minute I thought you were asking about candy as I read boudoir instead of boudin, which together with the title and m&m-candy really looked like spam to me ;)