The top four web performance challenges by Jeremy Keith

One outcome was to realise that there’s a tendency (in performance, accessibility, or SEO) to focus on what’s easily measureable, not because it’s necessarily what matters, but precisely because it is easy to measure.

Too true.

I think incremental and iterative improvements can be served well by measurements. But vast, innovative improvements and directional changes in product need more than analytics. They need vision and taste from humans.

Here’s a thought? Things that are measurable are like the micro of products, whereas vision and taste are the macro.