June 18, 2025

Puzzle Corner

Ready for a fresh set of puzzles? Click here for the July/August 2025 Puzzle Corner, brought to you by guest editor Ed Faulkner ’03. Send problems, solutions (by August 1), and comments to puzzlecorner@technologyreview.com. Editor emeritus Allan Gottlieb ’67 launched Puzzle Corner in 1966. Find back issues through 2022 at cs.nyu.edu/~gottlieb/tr and more recent back issues at technologyreview.com/puzzle-corner.

August 2023

Lyft takes a page from Uber’s playbook: Ads

August 10, 2023
Ride-hailing giant Lyft will start displaying ads in-app, as well as via in-car tablets, rooftops and bikeshare stations. “Lyft has a captive audience throughout their entire ride journey – waiting for their car, matching with their driver, and in ride – and brands can now reach riders in relevant and tailored ways across our suite […]

Data visualization startup Virtualitics lands $37M investment

August 10, 2023
Many companies grapple with data challenges. In a 2019 survey, Deloitte reports that 67% of executives aren’t comfortable accessing or using the data at their organizations. In a separate poll from NewVantage Partners, meanwhile, less than a third of firms identify themselves as being data-driven — despite significant investments in AI and business analytics tools. […]

New Inflation Data… Widespread Concern Among Investors

August 10, 2023
Recent inflation data has sparked widespread concern due to its repercussions on the economy and the stock market. This situation has stirred many emotions among investors and economists, each responding…

SEC bites back, to appeal federal court ruling in XRP case

August 10, 2023
In mid-July, a federal court settled a years-long battle between Ripple Labs and the SEC to decide if Ripple’s XRP token was a security or not. Southern District of New York judge Analisa Torres ruled that the XRP token is not a security when sold to the general public, but it could be treated as […]