Depends on what you consider a "difficult challenge". If the challenge is to remember certain algorithm, it's not worth it - coming up with djikstra without hint was fun the first time, but needing to remember the detail for the nth time isn't.
And for good measure, those stop having value in the future - as they can be referenced from AI as easily as looking up how to convert a date format or center a div.
Comments
Depends on what you consider a "difficult challenge". If the challenge is to remember certain algorithm, it's not worth it - coming up with djikstra without hint was fun the first time, but needing to remember the detail for the nth time isn't.
And for good measure, those stop having value in the future - as they can be referenced from AI as easily as looking up how to convert a date format or center a div.