On Tuesday, at about 10 a.m., a stranger burst into Inspector Warnick's room. He was extremely excited. His hands trembled, disheveled hair sticking out in all directions. A few minutes later, having lit a cigarette and calmed down, the visitor began his story:
- This morning I returned from vacation. All night I had to shake on the train. I did not get enough sleep and, having arrived home, I decided to lie down on the sofa. From fatigue, I did not immediately notice that the piano had disappeared from the room, and the coffee table and chair had been moved. On this sheet of paper I drew a plan of the arrangement of furniture in the room before I left.
- That's what, dear Inspector Varnike said, glancing briefly at the drawing. - First of all, it is completely clear to me that you did not have a piano at all. Now let's find out why you needed this lie.
Why did Inspector Varnike doubt the veracity of the visitor?