In Proverbs 14, the simple get a bad rep. But the point of that is to remind us, who might be simple-minded, to gain some nuance in the way we think.
For instance, Proverbs essentially outlines four ways of coming to know:
- Senses
- Inference
- Testimony (correction, tradition, instruction, or divine revelation)
- Trial and Error
Proverbs says that the simple believe anything that they hear and that they inherit folly.
Proverbs ESV 14:15 The simple believes everything, but the prudent gives thought to his steps.Proverbs ESV 14:18 The simple inherit folly, but the prudent are crowned with knowledge.
The simple, in Proverbs, is essentially the person who does not stop and think things through, whether a good or bad person. They are easily swayed, this is why Lady Wisdom is always trying to get their attention and way Lady Folly and the scoffers find them such easy prey.