# Why 2 equal decoupling capacitors are needed for each STM32 VDD pin?

I was watching this Kicad tutorial for an SMT32 chip and at 9:15 it says that the recommendation for each ot the VDD pins on the SMT32 chip is to put 2 100nf capacitors.

On this video: https://www.youtube.com/watch?v=BcJ6UdDx1vg I understood what decoupling capacitors are for, and I also understood why they're needed in parallel and why we can't simply substitute all of them for an equivalent one. It has to do with the curve of impedance. Each capacitance is able to reduce the impedance for some frequency. So that's why we use different capacitances.

However, I can't see a reson why 2 equal ones are needed for each VDD pin. Why not one with equivalent capacitance?