💬 [E7206] Munger's 1978-1982 letters document the impact of rising interest rates on leveraged financial institutions like Mutual Savings, which suffered from duration mismatch (borrowed short, lent long). This historical parallel illustrates how rate regime shifts create systemic stress in entities with asset-liability mismatches, relevant to current duration risk concerns.

💬 [E7203] Charlie Munger emphasized that 15-16% nominal ROE is inadequate in real terms when inflation runs at 11-16%, noting shareholders face a 'purchasing-power treadmill' where reported taxable profits merely maintain position. Blue Chip Stamps averaged 15% ROE through the 1970s despite inflation eroding real returns, illustrating the structural challenge of inflationary environments for equity holders.

💬 [E7205] Munger identified Mutual Savings as vulnerable to the classic 'borrowed short, lent long' duration mismatch during rising interest rate environments of the late 1970s-early 1980s. This historical example illustrates structural bank/thrift risk from interest rate exposure, a recurring theme in financial sector stress events.

🟢 [E7204] Munger's Blue Chip Stamps letters (1978-1982) articulate a portfolio construction philosophy centered on quality businesses with strong competitive moats, conservative balance sheets for opportunistic acquisition flexibility, and cash-generative businesses not requiring mandatory reinvestment. Book value grew 240% from $43M to $146M (1971-1980), demonstrating long-term compounding through disciplined capital allocation across See's Candy, Buffalo Evening News, Wesco Financial and other subsidiaries.