According to @drfeifei, a 9/11/2025 X post reflects on the space or nothingness between events, drawing attention to the path between points rather than just endpoints (Fei-Fei Li on X, Sep 11, 2025). In trading terms, liquidity gaps in crypto order books—the empty price levels between resting bids and asks—are empirically linked to larger price impact and slippage, heightening tail risk during aggressive execution (Bouchaud, Farmer, and Lillo 2009; Hasbrouck 2007). Traders can mitigate gap risk on BTC and ETH by slicing orders, using TWAP or VWAP, and avoiding thin-liquidity windows, as supported by optimal execution models and flow-toxicity research (Almgren and Chriss 2000; Easley, López de Prado, and O'Hara 2012).