In the realm of finance, there's a Wall Street adage that goes: "If you're set on catching a falling knife, best to have a skilled surgeon with plenty of thread by your side." This vividly portrays an investment maneuver – catching a falling knife – which entails buying an asset as its price plummets.

Picture an object plummeting from a height, with the attempt to grab it just before it hits the ground requiring immense skill and impeccable timing. The act of catching a falling knife in investing operates on similar logic: investors believe they can predict the exact moment the price will bottom out and rebound. Success, or 'catching' it near the lowest point, promises substantial returns as prices recover.

Yet, catching a falling knife is far from easy and conceals substantial risks. Reality tends to be harsher than expectations, with most attempts to nab descending assets ending in failure and significant losses. The challenge lies in the unpredictability of market bottoms and the tendency for investors to be misled by short-term price fluctuations, overlooking long-term trends and underlying risks.

Let's illuminate this phenomenon through two notable examples:

The first case dates back to 2000, amidst the burst of the dot-com bubble. Tech stocks plummeted 50% to 60%, leading many investors to view this as a prime 'buy low' opportunity, snapping up shares in internet companies in anticipation of a swift market turnaround and substantial gains. Unfortunately, the bubble fully deflated soon after, rendering these 'bargains' virtually worthless and inflicting heavy losses on investors.

The second case revolves around Bitcoin, the cryptocurrency superstar. In December 2017, Bitcoin's price nosedived from around $20,000 to $17,000, prompting numerous investors to see this as an entry point, expecting Bitcoin to soar to new heights again. However, within days, the price slipped further to around $10,000, leaving those who 'bottom-fished' with losses of roughly 35%.

These examples dramatically illustrate the high-risk nature of catching falling knives. Investors often suffer substantial financial setbacks due to misjudging market bottoms. Thus, for the average investor, cultivating risk awareness and understanding the cyclical nature of market fluctuations are paramount, rather than blindly attempting to catch descending assets. Successful investing hinges more on diligent research, patience, and diversified strategies than speculative gambles for short-term profits.

Remember, in finance, safety precedes profit. When assets plummet, it's wiser to observe and wait for clearer signals and a more stable market environment than to risk being cut by the 'falling knife.' After all, preserving capital is the utmost priority in the marathon of investing.