Technical Analysis Limits

Technical analysis limits are the failure modes that appear when investors treat price patterns as causal explanations or as substitutes for understanding the asset. EP80 与查理·芒格的跨时空对话：当眼睛失明时，我们看见什么？ does not say charts can never help, but it warns that chart reading can make investors overestimate skill, underestimate luck, and ignore whether the business itself is durable.

Key Claims

• Repeated shapes on a chart are not automatically causal laws.
• Pattern recognition can reinforce confirmation bias, hindsight bias, anchoring, and overconfidence.
• Price can be useful evidence, but price alone is not business understanding.
• Technical tools are more defensible as risk or timing aids when paired with Investment Risk Management, rather than as replacements for company and behavior analysis.
• The concept complements Trend Following and Stop-Loss Discipline: those pages treat price as structured evidence with exits, while this source warns against chart-only conviction.

Connections

• Charlie Munger — episode voice used to criticize overconfident chart reading.
• Financial Statement Analysis and Consumer Brand Moat — non-chart ways to understand business value.
• Trend Following, Stop-Loss Discipline, Pyramiding, and Averaging Down — trading-rule cluster that requires discipline if technical evidence is used at all.
• Investment Risk Management and Speculative Bubble Psychology — broader risk and behavioral context.