@AndyDavies @indysigner @smashingconf The cookie does nothing more than keep a user going back to the same branch for a given split test.
For measurements, you'd need to include suitably descriptive tagging in your analytics. A SSG could probably make light work of setting that up.
My tweets and posts live here on my own domain these days.
You can explore them here and follow me on Mastodon instead of Twitter where I'm not currently active.