Mark Penn on how the Internet era divides us

Mark Penn on how the Internet era divides us

In his new book "Microtrends Squared," author Mark Penn examines how the Internet has shaped modern society. He told CBS News chief Washington correspondent Major Garrett on "The Takeout" podcast that "in a world of choice people are making fewer choices."

The silent force behind online echo chambers? Your Google search

In an era defined by polarized views on everything from public health to politics, a new Tulane University study offers insight into why people may struggle to change their minds—especially when they turn to the internet for answers.