Economist Tyler Cowen writes: "We all overinvest in 

non-diversified mood affiliation portfolios." That's his

way of saying, "We're all biased."  Fifty years ago, it was 

called 'Selective Exposure'. More recently, it was called 

'Confirmation Bias'. Tyler Cowen calls it 'Mood Affiliation'. 

Same concept, different terminology. Reminds me of 

the Gershwin tune: 

"You like potato and I like potahto,

You like tomato and I like tomahto,

Potato, potahto, tomato, tomahto!

Let's call the whole thing off!"