When I started teaching real estate finance at Georgetown, I knew I was going to have to figure out how to explain cap rates without hiding behind the fact that everyone in the industry already knew the words.
Cap rates are part of the basic vocabulary of commercial real estate. People use the term constantly, and fluency with it signals experience, credibility, and belonging in the room.
The funny thing is that plenty of very experienced people would still have a hard time explaining what a cap rate actually is.
Not because they are not smart or do not understand real estate. Usually the opposite. They have used the term for so long that the vocabulary and the concept have fused together.
The simplest explanation I eventually landed on is this: a cap rate is a proxy for risk.
The formula matters. The market context matters. But underneath all of it is a pretty simple idea: the market is assigning a relative level of risk to an income stream, and that judgment affects what someone is willing to pay for it.
What Beginners Sometimes See Faster
When I started teaching cap rates that way, I noticed something I did not expect. Students who were completely new to commercial real estate often understood the concept faster than students who had internships or prior exposure.
The students who already knew the words had something extra to unlearn.
That has stayed with me because I think it says something important about expertise.
Expertise gives us speed, pattern recognition, shorthand, and judgment. That is the whole point of becoming expert. You do not want an experienced person re-deriving every answer from scratch.
But there is a tradeoff.
The more fluent we become, the easier it is to stop noticing the assumptions underneath the fluency. A frame gets familiar enough that it stops looking like a frame.
That is where the blind spot starts.
The problem is not that experts know less. It is that expertise makes some things feel so obvious that we stop asking whether they are still true.
When What Worked Before Gets Too Much Authority
I see the same thing in leadership and organizational work.
A leader who has been successful by trusting instinct may stop asking whether the instinct is still calibrated to the current situation. An organization built around a particular operating model may stop asking whether the model still serves the strategy. A team rewarded for moving fast can miss the point where speed starts getting in the way of judgment.
None of those is really a knowledge problem. The expertise is still there.
The issue is that something that worked before starts carrying too much authority over what is true now.
That is where the jurisdiction idea in Near Enemies has become useful to me.
Expertise absolutely belongs in the decision. It should shape what we notice, what patterns we recognize, and what experience tells us is likely.
It just should not close the case before the current facts get a hearing.
An old pattern is not automatically the right answer to a new context just because it has been right before.
Why Outside Perspective Can Help
This is one reason outside perspective can matter.
Not because the outsider knows your business better than you do. Usually they do not.
But they may be able to see the frame precisely because they have not spent years living inside it.
In a classroom, a student who does not yet know the vocabulary can force the underlying concept back into view. In an organization, an outside advisor can sometimes ask the question that feels basic, or slightly beside the point, because everyone inside stopped needing to ask it years ago.
That is a lot of the diagnostic work I do through Residy.
I am looking for the place where fluency has become invisibility. Where shorthand is carrying more weight than it should. Where something familiar has stopped being tested simply because it feels obvious.
The fix is not to become less expert. I am fairly sure none of us wants that.
It is to stay expert without letting expertise close the case too early.
The question I keep coming back to is:
What are you so fluent in that you have stopped noticing what you are assuming?