“It ain’t what you don’t know that gets you into trouble. It’s what you know for sure that just ain’t so,” the US writer and humorist Mark Twain said.

What Twain taught us is that deeply rooted and firmly entrenched beliefs are difficult to change without the ability to think critically, and that when confronted by an opinion that contradicts our own, we tend to retreat more strongly into our entrenched beliefs...

BL Premium

This article is reserved for our subscribers.

A subscription helps you enjoy the best of our business content every day along with benefits such as articles from our international business news partners; ProfileData financial data; and digital access to the Sunday Times and Sunday Times Daily.

Already subscribed? Simply sign in below.

Questions or problems? Email helpdesk@businesslive.co.za or call 0860 52 52 00. Got a subscription voucher? Redeem it now