Concepts.
Frameworks and concepts are lenses that support your reasoning - they do not replace structuring the case. Each one teaches when to reach for it, how to think with it, and when to leave it on the shelf.
A lens for sorting growth options by how much new risk they add - new products, new markets, or both.
Leading with your conclusion and then supporting it, rather than narrating your reasoning and hoping the listener reaches the point with you.
A lens for looking at a portfolio of businesses and asking which ones to fund, hold, or exit based on growth and relative position.
Finding the single slowest step that caps the throughput of a whole process, because that is the only place adding capacity actually helps.
The volume at which total contribution exactly covers fixed costs - the point where a business or a decision stops losing money and starts making it.
The single smoothed yearly growth rate that would take a value from its start to its end over several years - the honest way to summarize multi-year growth.
How much a resource could produce versus how much it actually does - and why chasing 100% utilization can quietly backfire.
Why one company can sustainably earn more than its rivals - and what makes that edge durable rather than temporary.
What each unit sold contributes toward covering fixed costs and profit, after its own variable cost - the number that drives most profitability math.
Breaking a change in revenue into its underlying drivers - price, volume, mix, and segment - so you find the real cause.
An observation is what the data says; an implication is what it means for the decision - and interviewers reward the second, not the first.
People do what they are rewarded to do - so behavior problems in an organization usually trace back to what the incentives actually pay for.
Estimating the size of a market from a few defensible assumptions and clean arithmetic, and knowing which number the question is really asking for.
A lens for checking whether the many moving parts of an organization actually fit together and reinforce the same goal.
The difference between a relative change (a percentage) and an absolute change in a rate (percentage points) - a small distinction that flips answers.
A lens for judging how much profit an industry structurally allows, by looking at five sources of competitive pressure on it.
How sharply the quantity customers buy responds to a change in price - and what that means for whether a price move helps or hurts revenue.
Working out whether a price change earns more than it costs by weighing the margin gained per unit against the volume lost or won.
The extra value two companies can create together that they could not apart - split into harder-to-capture revenue gains and more reliable cost savings.
A summary restates what was found; a synthesis says what it all means together - the difference between listing findings and delivering an insight.
A compact lens that reminds you to look at the customer, your own company, and the competition before committing to a strategic call.
Whether a single customer or transaction makes money once you count what it costs to acquire and serve - the health check beneath any growth story.
Setting price from the value a customer gets and what they will pay for it - not from what the product cost you to make.
Averaging numbers that represent different-sized groups by weighting each by its size, so a big segment counts more than a small one.