During the seventy-two encounters, there was nothing wrong with the old man's every move. He was all maintaining and cleaning the library.

but!

This kind of observer thinking is observing from a human perspective.

If you look at it from a computer perspective...

What is the situation?

Song Ziyu quickly reviewed it in his mind, and came up with a horrifying result!

Seventy-two chance encounters!

The scenes seen were forty-four different locations.

Review all these locations, mark them with coordinate points, and then retrace the old man's trajectory.

Song Ziyu discovered that every seven days, the places the old man walked, the directions he cleaned, and the actions he performed were all exactly the same.

After calculating the old man's next move, Song Ziyu immediately verified it!

At this time, the old man is cleaning the floor of the side hall. Later he will walk to the flower stand, then stop at the fish pond on the flower stand for 12.5 seconds, then take a sip of water, and then continue along the corridor of the side hall towards the upper level of the library.

Clean up and go.

Song Ziyu put down the documents in his hands and stared at the old man intently.

It wasn't until the old man performed all the actions he had guessed that Song Ziyu took a breath!

If it weren't for supercomputers that can perform precise calculations, no one would have guessed that this old guy actually repeated every move he made seven days ago!

Then here comes the problem!

Is this old man still human?
Chapter completed!