Warren Buffett slams critics of stock buybacks as economically 'illiterate'

• Billionaire investor Warren Buffett calls stock buyback critics economically '"illiterate".
• He pushed back against criticism against share repurchases his widely read letter to shareholders released Saturday. 
• "The math isn't complicated: When the share count goes down, your interest in our many businesses goes up."

Don't listen to critics of corporate share buybacks, says investing legend Warren Buffett.