Rebounded from 60K to 70K, but the Fear Index is still in the extreme fear zone at 10. The divergence between market sentiment and price movement is quite interesting. Technically, the $BTC cost at 60,000+ might already be close to the mining cost line, but without the risks of mining rig depreciation and electricity fees. Of course, its MEME nature means it could continue to fluctuate irrationally. 40K or 120K, who knows.