After 1,5 years, or during my sixteenth play, whatever sounds worse, I discovered I had skipped a rule while reading the rulebook. All past scores invalidated. Twice as Clever! suddenly got thrice as hard!
Now you may be thinking I immediately read the rest of the rulebook, to see if I had missed anything else. No, no, not me. There's a real possibility I'll have to invalidate my scores once again after another 16 plays. 😬
Here's our national anthem.