[sunnybeetroot]

There are external factors apart from your own API that can impact latency, for example a user could be in an area of poor internet connection or have a slow connection. Users do not live in our perfect development environment bubble where everything just works, it’s important not to assume that.

[weird-eye-issue]

If it takes 1 second for a small percent of users to get form validation back it won't impact the business

[chrisandchris]

That's how we got to "download 50 GB before playing a game on a console is fine", feels like we just stopped carying. Sending the form to the BE just to do same basic validation adds so much latency to the UI that it feel unusable for many/most users.

Related: A few Sundays ago I wanted to play Anno again. Sadly it was not installed on the Laptop I used. So i started downloding it because you won't get it on DVD/as iso-file today). Now it's a few Sundays after and I didn't play yet - because the download took 7 hours.