If it looks white on your uncalibrated display, yes it is lying.

Would you care to explain why you believe Photoshop is lying to me when a point on the screen image says there is blue and red in the area I am measuring which appears white. I thought that was called a color cast in some instances. And anyway if images I provide are screened on Mom and Pop devices that have never heard of calibration. So whats the big deal that your “professional" screen is correct and their screen is their screen, not yours. JohnR