I didn't say people are good at sniffing out lies. I said that people are better at sniffing out lies than they are at sniffing out good intentions between those lies.
I'll phrase it another way: When you tell a lie, some people will see through it and some people will believe it. Of those who see through it, some will believe you had good intentions for lying, and some won't. These proportions all vary depending on the exact nature of the lie and the audience receiving it, but it's virtually always the case that [see through the lie] > [see through the lie AND believes it well intentioned]
Or put another way: Every time you tell a white lie, you burn your own credibility because some people will see through your lie and won't be inclined to excuse you for it.
I'll phrase it another way: When you tell a lie, some people will see through it and some people will believe it. Of those who see through it, some will believe you had good intentions for lying, and some won't. These proportions all vary depending on the exact nature of the lie and the audience receiving it, but it's virtually always the case that [see through the lie] > [see through the lie AND believes it well intentioned]
Or put another way: Every time you tell a white lie, you burn your own credibility because some people will see through your lie and won't be inclined to excuse you for it.