You want to try out the long term effects of a different layout, and decide to serve 1 out of 500 users this new layout. You remember the randomly assigned 'beta' visitors, so that you can keep serving them the new layout and track their long term behavior.
If one of Google's bots is one of the 'beta' visitors, and another one is not, they might interpret this as if you're trying to mislead them?
What is the safest way from an SEO perspective to do this?
Thank you in advance,