The suits alleged that the banks used improper methods of calculating overdraft fees on debit card and ATM transactions.» (blog.psjd.org)
Yes sloppyness and an enviornment of hinding data / methods along with improper methods. (climate-skeptic.com)
Another example of which was the issue that they found improper methods being used, meaning somehow they knew of better methods, then went on to claim, «It is not clear, however, that better methods would have produced significantly different results.» (climate-skeptic.com)