EEVblog 1512 - Why Bypass Your PCB Like THIS?

Why add bypass capacitors on a PCB like THIS?
Answering a Twitter question:
https://twitter.com/furan/status/1586889993234038786
Are bypass capacitors really needed? https://www.youtube.com/watch?v=P8MpZGjwgR0
Bypass capacitors visualized: https://www.youtube.com/watch?v=1xicZF9glH0
Bypass capacitor tutorial: https://www.youtube.com/watch?v=BcJ6UdDx1vg
https://www.vgamuseum.info/index.php/cpu/item/993-s3-supersavage-ixc-sdr
https://docs.xilinx.com/v/u/en-US/wp411_Sim_Power_Integrity

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