So the concept on single variable Testing is you want to eliminate as many Variables as possible so you can get Down to the point that you are just Testing one thing And if you can test one thing then you Can see if it is if it is if it is a Ranking factor it’s a positive factor if It’s a negative factor or if it doesn’t Do anything at all and so the idea is That you know when You’re deciding should I do something in SEO it should be based on a foundation Of will this well let’s move the needle And then you want to then get down to One thing to see does that thing move The needle and then you can kind of Build your SEO Foundation from there