Why did Boeing build the 777X with dimmable windows?

The feature also appears on the Boeing 787.

Is It True That The Boeing 777X’s Windows Are Larger Than The 787 Dreamliner’s?

The Boeing 777X will also feature a revamped interior, significantly improved from the 1990s-era "Boeing Signature Interior" ...
Yahoo

See what passengers can expect on Boeing's long-delayed 777X as Emirates gives it a major boost

Boeing's delayed 777X picked up a 65-strong order from Emirates at the Dubai Airshow in November. The jet hosts a suite of cabin perks, such as bigger windows and turbulence reduction. Airlines can ...
The Business Journals

ANA wants darker Boeing 787 windows

To continue reading this content, please enable JavaScript in your browser settings and refresh this page. The dimmable windows on Boeing Co.'s new 787 don't get dark ...

Why Did Boeing Build The 777X With Massive Windows?

Boeing worked with customers on the design of the 777X long before its announcement in 2013, going so far as to a 40-foot cabin mock-up. Boeing relied heavily on feedback from dozens of airlines when ...