Beyond the Tesseract

Hint:
Scan everything with the stack.

Step by step walkthrough:

Read the book.
Put the disk in the projector slot.
Hit the projector and push four.
Read the Tomb.
"THE ETERNAL SOUL". Stop reading.
Go to the center and Break the prism into a tetrahedron.
Read tetrahedron in UV-IR chromatic room.
"SEEKS THE EXACT".
Go southeast.
Eat Z-pills.
Sleep.
Prove supposition with postulate -> lemma.
Prove hypothesis with lemma -> theorem.
Give theorem to mathematician.
"REASONS AND ANSWERS".
Rest.
Wake.
Roll hexagon four times.
Do the last operation indicated "+nnn".
The sum of the three numbers generated = probability of getting the
improbability.
Get improbability.
Drop improbability in the field of absolute certainty.
The field warps to an eastern exit -> integral.
Differentiate integral with the undifferentiable function -> singularity.
Put singularity in the groove in the audio device.
Wear audio. _Y_ hexagon -> 4D solid.
Melt solid with plasma -> 4D liquid. _Y_ strip -> klein bottle.
Fill klein with liquid. Pour klein in plant.
Listen. "OF COUNTLESS TESSERACTS".
Pop stack all the way back up.
Say TESSERACT.

NOTE: You can THINK in the twilight of thought -> idea.
EVALUATE the idea -> contradiction.
But you must drop the contradiction before you can prove anything.