Amaury Anciaux Quantifying the spreadsheet modeling risk Why quantifying modeling risk matters When testing the ideas that eventually led to River, I spoke with many analysts who build decision-support models in Excel. Almost everyone told me the same thing... Nov 7, 2025
Amaury Anciaux 12 treacherous Excel errors What are treacherous errors? Many formula configuration errors in Excel result in visible errors that propagate all the way down to your final output sheet. Think of using a reference to the wrong cel... Oct 30, 2025
Amaury Anciaux The 4 critical mistakes in Excel VLOOKUP formulas These 4 mistakes are critical because they lead to silent errors , which are very difficult to identify and debug. The following picture shows what you should pay attention to: The truth is, this pict... Oct 28, 2025