From the article:
Recent surveys show that both employees and employers support this arrangement. And research suggests that a couple of days a week at each location is the magic number to cancel out the negatives of each arrangement while reaping the benefits of both.

“You should never be thinking about full time or zero time,” said Nicholas Bloom, an economics professor at Stanford whose research has identified causal links between remote work and employee performance. “I’m a firm believer in post-Covid half time in the office.”

https://www.nytimes.com/2020/07/02/upshot/is-the-five-day-office-week-over.html?referringSource=articleShare