Your sentence is too incomplete to understand exactly what you are asking.

The particles in the double slit experiment were responding to the observers, even able to predict what they would do before they decided it-to observe or not observe.

In case this is what you're asking:

“A fundamental conclusion of the new physics also acknowledges that the observer creates the reality. As observers, we are personally involved with the creation of our own reality. Physicists are being forced to admit that the universe is a “mental” construction.

Pioneering physicist Sir James Jeans wrote: 'The stream of knowledge is heading toward a non-mechanical reality; the universe begins to look more like a great thought than like a great machine. Mind no longer appears to be an accidental intruder into the realm of matter, we ought rather hail it as the creator and governor of the realm of matter.'

Get over it, and accept the inarguable conclusion. The universe is immaterial-mental and spiritual.” – R.C. Henry, Professor of Physics and Astronomy at Johns Hopkins University , “The Mental Universe” ; Nature