The phrase "obsolete method" refers to a way of doing something that is no longer useful, effective, or relevant. It is an outdated approach that has been replaced by newer and better methods. Full definition
(Of course, not all midwives encourage the refusal of standard tests, but if they do, then they are categorizing women using obsolete methods, which can be disastrous for the woman AND the baby.) (skepticalob.com)
WE will NEVER ACHIEVE anything BIG again under this old and obsolete method user. (justarsenal.com)
There is very little reason to resort to these obsolete methods. (2ndchance.info)