Ron de Kloet, professor in medical pharmacology in Leiden and famous for his research on stress, about the journal impact factor in the university weekly Mare (my translation): "In the past, we did not have this complete idiocy around impact numbers". He thinks that those who have to judge scientists on their performance rely too easily on the journal impact factor. "In this way, the journal rather than the researcher is being assessed. And young researchers know that not their individual creativity counts but the visibility of the journal. This can make people obsessed and take away the pleasure in science." Wise words!