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The PAC learning framework provides a formal way to quantify the learnability of a concept class.

Sometimes we stare so long at a door that is closing that we see too late the one that is open.

I’m not a fan of money. Money can’t buy happiness.

"Every family has its secrets, but some secrets are buried deeper than others."

人生短暫，過著過著你就沒了，明白么？

The silence between them was heavy, filled with unspoken words and unresolved emotions.

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