Hart’s research focuses on one specific type of gesture: pointing. While pointing might seem simple, it’s a complex tool that can direct attention, convey emotion, and even shape how we ...

The indicative gesture assigns blame; therefore, providing a No. 1 reason not to point, ... It is because the pointing finger prods at a vulnerability we all share.

There are some instances where pointing is necessary, of course. But, in these cases, it's always more polite to gesture with an open hand rather than your index finger.