Glanced over it, didn't tell me much. If it's a good idea, surely one of the hundreds of democracies, or even non democracies would have tried it so far. So who's tried it?OK, a few things.
This obviously isn't a new concept, with roots tracing back to Plato. However in modern times, it has been coined by a particular political philosopher as epistocricy.
https://aeon.co/ideas/the-right-to-vote-should-be-restricted-to-those-with-knowledge
it's worth a read as it gives some insight into what the details might look like, it's not too long an article. For something longer, just Google the work of Brennan mentioned in the article.
As for examples today, there aren't any exactly like that. However, there are some countries where the only people that have to vote are the citizens who are literate. Obviously it's not the same, but the underlying theme is. Intelligent people are the ones who should be making the decisions.
The fact that no one uses it, just like the electoral college, should be a major red flag that it's a bad idea. And which countries require a literacy test to vote? Again, I can't think of any, so if you know them, feel free to toss them out.
I can also assure you that having more intelligent people in charge would absolutely not have the policy results you hope for.