We are all taught, early in life, that it is bad to lie. But nobody warns us that some people will ignore this rule—to their benefit, and our detriment. While most of us live by the same moral code, we aren’t armed with the tools to deal with the liars who do not.Rather, our brains are hardwired to make it more likely we will believe liars, and fall prey to manipulators. A truth bias makes our brains default to believing everything we hear as true; a trust bias makes our b...