TBL-CBA Trap #7: Tolerating False Precision

by | May 14, 2018 | Economics, Sustainability

Number 7 in our TBL-CBA traps series.

7.      Tolerating False Precision

The results are in – the Net Present Value is $101.234567 million (exactly) – let’s go! But wait…what if the risk associated with that number is +/- $200 million? How do you feel now? Is the project still a go? Robust TBL-CBA methodologies employ risk analysis so that all inputs are described by a probability curve derived from the low-expected-high values across the economics literature for a given input. Doing so means that you can offer confidence intervals (think, levels of certainty) attached to all the results. So, everything, including uncertainty, is on the table for the client.

Click here if you would like an infographic of the Top Ten TBL-CBA Traps.


Trap #1 – Re-inventing the wheel

Trap #2 – Forgetting Certain Stakeholders

Trap #3 – Double Counting

Trap #4 – Letting the Loudest Voice Win

Trap #5 – Asking “Are We Doing the Right Project?” but Forgetting “Are We Doing the Project Right?”

Trap #6 – Assuming it is Difficult and Expensive


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