Separate a trigger from the feedback A technological change, easier market access or a new financial product can alter real opportunities. The existing summary describes such background factors. Then ask whether rising prices themselves are drawing attention and strengthening the argument for buying.

Allow more than one explanation Earnings, interest rates, financing conditions and expectations can also change. Calling a market a bubble does not settle every causal question. Compare the competing explanations and the evidence that each would require.

Check what the story leaves out A memorable winner can omit losses, costs, failed forecasts or the many companies that did not succeed. A public figure’s confidence does not establish that their circumstances, incentives or exposure match yours.

Use original evidence The SEC and FINRA caution that social-sentiment information may be stale, incomplete, misleading or manipulated. Read the underlying company information and understand how a signal was produced. A sentiment score is not a full investment assessment. Source 4.

Notice the reference point A recent high, a friend’s gain or a memorable forecast can shape what feels normal. Ask why that reference point should determine value. It may describe a past price or someone else’s experience rather than the cash flows you are considering.

Distinguish skill from a favorable market A winning period does not isolate skill from luck, concentration or market exposure. Record the reasoning before the result, including contrary evidence. Admitting uncertainty is compatible with a disciplined process.

Use a consistent earnings basis Trailing, forward and cyclically adjusted earnings answer different questions. Do not compare them as if they were identical. For an index history, check the series, dates, inflation treatment and whether dividends are included.

Avoid a universal threshold Accounting, business mix, rates and expected growth affect comparisons. A historical average is context, not a law that a ratio must reach on a schedule. Zero or negative earnings also make a standard positive P/E comparison unsuitable.

Identify the consequence, not just the label If a price fell substantially, what money would be needed soon, what obligations would remain and what exposure would dominate? A bubble label is less useful than understanding those consequences. No chart can assure recovery by your deadline.

Treat safeguards as limits, not promises Diversification can reduce dependence on a single holding but cannot prevent every loss. Repeated trading, ignored fees and the tendency to retain losers deserve separate attention. The SEC’s behavioral bulletin discusses these patterns. Source 5.

Before interpreting a boom Record the claim, original source, contrary evidence, earnings basis and assumptions in the price. Describe the consequences of being wrong without pretending to know the timing of a reversal.

After a result Compare your original reasoning with the evidence available then. Do not judge the process solely by the outcome. Reading markers and these practice checks stay on this device; they do not complete the LMS lesson.