Our world of seamless information sharing and low-attention spans make it easy to spread news stories that are entirely fabricated. An entire industry of fake news sites has emerged generating advertising revenue for their owners. How do preexisting beliefs make us fall victim to outrageous stories? Why can’t we make rational decisions when it comes to evaluating information? How do our Why can’t we resist sharing articles that confirm our views? A panel of faculty members from philosophy, sociology, and psychology discuss these questions.
Were there 5 million people at the Cubs rally downtown last week? Everyone agrees that there were a lot of people there, but just how do they decide on a number? One estimation method was developed by journalism professor Herbert Jacobs in the 1960s. The method is described by msnbc in an article that discusses estimating crowds and some recent historical gatherings. And in 2011, Popular Mechanics magazine talked about some of the science behind crowd estimation.
In the video below, novelist and physicist Alastair Reynolds offers some thoughts on colonizing the galaxy. He notes that given the vast size of the galaxy it would take about 3.75 million years to colonize the entire galaxy. This is longer than humans have been in existence. But, it is actually not too long considering that the galaxy works on a scale of billions and billions of years.
In this talk, Reynolds asks us to think about the Fermi Paradox, which basically asks, “if there are aliens out there, where is everyone?” Why haven’t they shown up yet?