Comment is free, but facts are sacred. -- C.P. Scott, editor of the Manchester Guardian, 1921
When you hear claims by anyone about any topic, ask for the data to support that claim.
If it's an anecdote, that data is a sample of one from an unknown population.
If it is data gathered from an unverifiable source, suspect it cooked to start. Then do some statistical assessment of the data. What the variance, the mode, not just the mean. Read The Flaw of Averages and Flaw of Averages and Not Estimating
If it is data from a different domain - Macro-econ applied to Micro-econ domain, then it's bogus. If it's a claim that NOT doing something will remedy the observed problem, then ask for the root cause analysis showing the cause and the corrective and/or preventive actions that will remove the source of the observed problem.
