if you look at how much score you lose in terms of loss of resources for scanning vs how much xp you get for scanning, this shows that you actually gain score for a few scans but if you try and abuse it you end up wasting your resources
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giving min(1 ... ) actually means you can get a huge gain by planet scanning - building ships with those 3k resources gives you 30 score, whereas you get 50 score for scanning. Hence huge abuseness.