Virologist-blogger ERV takes down a Creationist study of bacterial antibiotic resistance, pointing out (1) the methods are flawed, (2) there’s no replication, (3) the interpretation is bogus, and – my personal favorite – (4) someone else has already done the same experiment:

Look, I know relatively little about bacteria. They arent the ‘micro’ in microbiology Im most interested in. But I can do a basic PubMed search to find a paper that analyzed the fitness cost of antibacterial resistance in Serratia marcescens the hard way (ie, the right way): A Fitness Cost Associated With the Antibiotic Resistance Enzyme SME-1 β-Lactamase. [hyperlink from original]