Creative Destruction: The Damage Is the Mechanism
New methods can only grow by taking resources from old ones. The productivity gain and the displacement are not cause and side effect — they are the same event seen from two sides.
Concept
Opportunity Cost
Personal Finance: The Boring Part Is the Part That Works
Most attention goes to choosing investments — the part you control least and that matters least. Saving rate, time, and costs decide the outcome, and all three are dull.
Opportunity Cost: The Free Ticket That Costs You an Evening
Money spent arrives with a bill. The alternative you silently rejected never does — which is why we count one half of every decision carefully and the other half not at all.
The Principal-Agent Problem: Your Agent Earns ₹2,000 From Your ₹5,00,000
Holding out two weeks for a better house price is worth a fortune to you and pocket change to your agent. No dishonesty required — just a small gap between what you want and what they're paid for.
Margin of Safety: Building for the Estimate Being Wrong
A bridge expecting ten tonnes is built to hold fifty. The extra capacity will likely never be used — and it is not there for unusual lorries. It is there because the calculations might be wrong.