#perfnow @anniesullie giving a fascinating talk on good metrics and how to use them
Shout out to @ChromeUXReport
#perfnow Q: how would you evaluate Cumulative Layout Shift as a metric? How might we improve layout stability metrics?
Moar @HTTPArchive data!
"Performance is a distribution, and it's usually not normally distributed"
A/B testing is super hard to do statistically correct IMO. How you group users into A or B is the hardest part. Allowing opt-in screws it all up.
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