Eldy so-called easy-to-use UI is a failure

I was checking out an app called Eldy today that's supposed to make computers easier to use for the elderly. It has the obvious things: big buttons, fewer options, uncluttered window.

But it fails because its designers don't understand the main reason computers are hard to use: They communicate to users in ways that users don't understand. For example, here's what you get if you type a nonexistent URL into the Eldy browser:

Here's what Google Chrome, not specially designed for novice users, gives you if you type in the wrong URL:

Here's a guideline I'd propose for UI designers who want to make their app usable by novices: Never say anything to the user that the user doesn't understand. That means that 100% of all error messages and user queries have to be caught and either handled (the best choice) or rephrased. If you can't do that, don't bother. Your UI is going to be a failure.