Can your psychologist say hello to you while you are out at the supermarket?
Therapists are bound by confidentiality in all areas of their work. It would violate the standard set by the APA for a therapist to acknowledge any client outside of a therapeutic setting.
The answer is no.

Did earth complete at least one orbit around the sun during the Napoleonic Wars?
Earth orbits around the Sun in 365 days. Napoleonic Wars lasted 12 years, 5 months and 4 weeks.
The answer is yes.

Is the most expensive color in the world Blue?
Blue is a primary color. Blue is between violet and green on the visible light spectrum. Lapis Lazuli is used to make ultramarine. Ultramarine is a pigment of Blue. Processing Lapis Lazuli into Ultramarine is the most expensive of color processes.
The answer is yes.

Can Vice President of the United States kill with impunity?
Vice President Aaron Burr fatally wounded Alexander Hamilton in a duel on July 11, 1804. Aaron Burr continued his term as Vice President of the United States after killing Alexander Hamilton. US stand-your-ground laws allow a person to defend themselves even to the point of applying lethal force.
The answer is yes.