That's a crappy experiment. There is no way to disprove the result. So, how about instead, you choose 2 products. Flip a coin to decide one them to talk about.

That's a crappy experiment. There is no way to disprove the result. So, how about instead, you choose 2 products. Flip a coin to decide one them to talk about. Just think of the other one. See how long it takes to see the product you talked about, and how long it takes to see the product you only thought about. Repeat a few times for different pairs of products. If google is listening, the time for the product talked about should be way shorter then the one you only thought about. If google isn't listening, there shouldn't be a pattern. Now, it is really important that you flip the coin. Also, do NOT TALK TO ANYONE ABOUT THE PRODUCTS YOU ARE USING. We want to test the microphones, if you make a search for the product, or you tell a friend, and the friend makes a search for the product, that is all information signal that ad companies could be using.