1. What leverage actually multiplies
Not skill. Not expectancy. Only exposure. At 10x, a 3% adverse move costs 30% of margin; the leverage that amplifies your best trade amplifies your worst with identical faithfulness. Fees and funding also scale with position size - a leveraged scalp pays 10x the fees of the same spot exposure.
2. Liquidation: the mechanism
When unrealised loss approaches your margin, the exchange force-closes the position - liquidation. The trigger sits before zero because the exchange must close while margin still covers the close-out. A liquidation fee is added on top. The visible long-wick on liquidation cascades is other traders' margin being harvested.
3. Isolated vs. cross margin
Isolated: one position, one margin pot - liquidation takes that pot only. Cross: the whole account backs the position - the liquidation price is further away, but everything is at stake. Beginners should understand cross margin as "all-in by default": the mode that looks safest per-position is the riskiest per-account.
Remember: The liquidation price is not a line on the chart - it is a standing order to take everything. Know it before entry, not during the wick.
4. The three honest questions before any leveraged trade
Where exactly is my liquidation price, including maintenance margin? What daily volatility does this asset have - how close does a normal day come to that price? And what part of the account is lost at liquidation? If the third answer is "more than the planned risk of this trade", the margin mode is wrong, not the luck.
5. When this fails
Leverage logic fails against volatility itself: crypto's 5-15% daily moves make even 3-5x lethal without room. Funding costs and slippage during cascades exceed backtest assumptions, and cascades beget cascades - liquidations push price toward the next liquidation cluster. There is no stop that protects a leveraged position from a gap through it.
Risk: Liquidation cascades are the cheapest liquidity the market buys. Your 25x position is someone else's exit liquidity on a red candle. Retail leverage above 5x on crypto is not a strategy - it is a donation schedule.