Even if localizing specific brain functions is at some point wholly agreed upon as a worthwhile endeavor, fMRI scanning has its critics, too. Perhaps the most colorfully demonstrated argument against the efficacy and reliability of these scanners came about in October 2010. Researchers stuck a dead salmon in an fMRI, asked him questions about human emotions, and measured his response. That is to say, the dead salmon had brain activity show up in his scans. The dead fish had thoughts on human emotion.