What does this phrase "Our perceptions filter our experiences of the world through an imperfect personal lens" mean? Can someone put it into simpler words? Thank you.

The missionaries who appear in the novel are colonists from britain portugal spain italy

2. which of the following topics would be too broad for a speech lasting 5 to 10 minutes?

Aman lives on the twelfth floor of an apartment building. every morning he takes the elevator down to the lobby and leaves the building. in the evening, he gets into the elevator, and, if there is someone else in the elevator -- or if it was raining that day -- he goes back to his floor directly. otherwise, he goes to the tenth floor and walks up two flights of stairs to his apartment.