Not another survey

Not a week goes by without some survey or another showing a link between X and Y ... between healthy workplaces and productivity, for example.

However, in almost all cases, there are just surveys ... usually of people with a vested interest (workplace health practitioners in the above example) and undertaken by a company with another vested interest (providers of workplace health-related products or services).

This doesn't mean that there is not a relationship between X and Y ... simply that a small survey of vested interests is not the way to establish such a relationship.

Be careful what you read!