Skip to main content
Dictionary
Store
Blog
World
Help
Advertise
Chat
System Status
Information Collection Notice
Trademark Concerns
reCAPTCHA Privacy
Terms of Service
reCAPTCHA Terms
Privacy Policy
Accessibility
Report a Bug
Data Request
Contact Us
Security
DMCA
© 1999–2026 Urban Dictionary ®
Mugs
Tees
Hoodies
Pro Customization
Create unique products with your own words and definitions
Preview
Personalize Your Design
Your Word
Your Definition
The notoriously difficult challenge of drawing a clean line between legitimate science and its fraudulent imitators. Where does physics end and metaphysics begin? When does speculative biology become pseudobiology? The problem is that science and pseudoscience exist on a spectrum, with no single magic criterion—falsifiability, peer review, empirical method—that perfectly separates them in all cases. Astrology is easy to dismiss, but what about string theory, which makes no testable predictions? What about Freudian psychology, which is culturally influential but methodologically dubious? The Hard Problem is that demarcation is itself a scientific and philosophical puzzle with no universally accepted solution.
Text fits
Save
Cancel