Analyze the following four arguments, each of which draws a flawed conclusion about the present or future based on past conditions. Match each argument to the statement that best diagnoses its specific time-shift fallacy.
- City Planner: This intersection has operated without a single major collision since it was constructed fifty years ago. Therefore, we do not need to install traffic lights even with the opening of the new shopping complex on the adjacent lot.Takes for granted that a historical record of safety will persist despite newly introduced environmental variables.
- Promoter: The Crimson Phantoms' upcoming reunion tour will undoubtedly sell out every stadium. After all, during their prime in the late 1980s, every single concert they played was sold out within minutes.Fails to consider that public tastes or market conditions may have shifted significantly since a previous era of success.
- Financial Advisor: Invest in StartUp-X immediately. Their valuation has grown by exactly 20 percent each month for the last twelve months, so you can expect a 20 percent return on your investment next month.Unjustifiably projects a documented historical trend into the future without establishing that the conditions driving the trend will continue.
- Inspector: There is no need to test the drinking water at the old municipal building for lead contamination this year. The pipes were comprehensively evaluated a decade ago and declared completely free of lead.Presumes without warrant that a physical state verified in the past has not degraded or been altered during the intervening time.
Answer
City Planner matches the failure to consider new variables; Promoter matches the failure to consider shifting public tastes; Financial Advisor matches the unwarranted projection of a historical trend; Inspector matches the presumption of a static physical state.
Each argument contains a distinct variation of the time shift flaw. The City Planner ignores new environmental variables (the mall). The Promoter ignores changing cultural tastes over time. The Financial Advisor unjustifiably extrapolates a short-term trend. The Inspector assumes a physical state is immune to degradation over a decade. Matching these specific logical errors to their precise descriptions correctly identifies the flaws.
Step-by-Step Solution
Key Concept
Time Shift Flaws often occur when an author assumes that conditions present in the past will remain unchanged in the present or future, failing to account for new variables, changing trends, or the natural degradation of physical states over time.
Estimated Time:1m 30s