Friday's Fast Five: Week of 7.7

What is Threads? Here’s what you need to know about the potential ‘Twitter Killer’ (CNN): Facebook-parent Meta on Wednesday officially launched its Twitter competitor, Threads, after first confirming its plans for the app just three months ago. Threads could pose a serious threat to Twitter, and for Meta, Threads could further expand its empire of popular apps and provide a new platform on which to sell ads.

What It Takes to Convert a Multi-Million Dollar Office Into Housing (Wall Street Journal - Video): With housing in short supply, developers are converting more empty offices into apartments. But not all buildings are candidates for reuse, even as more than one billion square feet of office space sits vacant across the U.S.

The biggest hedge fund in the world says ChatGPT was able to pass its investment associate test (Markets Insider): The co-CIO of Bridgewater Associates seems pretty impressed with the investment acumen of OpenAI's ChatGPT artificial intelligence tool. Greg Jensen, co-CIO of the world's biggest hedge fund, told Bloomberg that ChatGPT was able to pass its investment associate test, and that the power of the buzzy AI chatbot is like having "millions" of junior staffers working all at once. 

Supreme Court strikes down Biden’s student loan forgiveness plan (CNBC): The Supreme Court on Friday struck down President Joe Biden’s federal student loan forgiveness plan, denying tens of millions of Americans the chance to get up to $20,000 of their debt erased. 

4 volunteers just entered a virtual "Mars" made by NASA. They won't come back for one year. (CBS News): Four volunteers entered a simulated Mars habitat on Sunday, where they are expected to remain for 378 days while facing a range of challenges designed to anticipate a real-life human mission to the red planet. The simulated mission is the first of three planned Mars surface simulations, each of which is expected to last one year. NASA says the information collected and studied over the course of these missions, along with ongoing exploration happening on and around the moon, will help send the first astronauts to Mars in the future.