It is well to note that when you search for something in Google search, The results are shown by internal programming (What is known as an algorithm). Once you click a link, the info vanishes. Never to be seen again. This is known as “ephemeral results”.
From the Dictionary:
ephemeral [əˈfem(ə)rəl]
ADJECTIVE: lasting for a very short time.
“fashions are ephemeral”
synonyms: transitory · transient · fleeting · passing · short-lived · momentary · [more]
This is why it is hard to prove how Google is shifting peoples thought patterns in Googles search’s… Up until now…
Please read up on Dr. Robert Epstein on MyGoogleResearch.com.