[jamiek88]

If humans weren't tribal, social animals and were instead Vulcan then yes the 'truth' probably would be sufficient.

Any information that challenges our deeply held beliefs can trigger a physical fight or flight adrenaline dump.

Even when gently, thoughtfully delivered.

Actual everyday scams its often impossible convince a person they are being scammed even as they are cashing in their savings to buy itunes giftcards for the IRS.