The speaker states that they do their best not to use turn-by-turn directions in their car. Stimulus response navigation concerns neuroscientists because people are not present and are constantly looking at a screen instead of the outside world.
"The speaker mentions turn by turn GPS navigation as a means of navigating when driving or walking. Although a general navigation system is mentioned, specific GPS apps, such as Google Maps or Waze are not mentioned, which are needed to trigger the product."