This content was created by Paul Barnhurst. This content was uploaded by Paul Barnhurst. This is a YouTube video titled "Correct output does not equal good modeling." created on November 18, 2025, discussing the challenges of building models that not only produce correct answers but also use efficient methods, highlighting issues with a specific Excel formula approach.
This is going to be a classic thing where if the challenge was just get the right answer, I don't care how you build the model. Great, it's got full marks. This was the one where you've got to pick the top two numbers from this text string and add them up. I thought it done a dynamic range here, but it's individually built a calculation that is adding blocks. So if you look at this, I'm assuming if I keep going to the right here, each one gets bigger. I've also noticed my Excel spreadsheet is now seriously slow. So here is the formula that it created. There's getting the right answer, and then there's building something like that, which to me is absolutely horrific. That is a terrible method to build it.
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