The white space felt increasingly alien. Each time Rizal tried to understand it, to find boundaries or patterns, he only got more lost in its infinity. The tesseract was the only marker, the sole "real" object in the abstract sea of white.
Rizal recalled the physics theories he had studied. About how the fourth dimension is hypothesized to 'envelop' the third dimension, how time might behave like a spatial dimension in a larger universe.
"If you're a bridge, show me." Rizal focused his thoughts on the tesseract, trying to 'communicate' in a way he had never imagined before. "Show me how this dimension works."
The tesseract seemed to react. It spun faster, its colors shifting, and its shadows danced with increasing intensity. The white space around them began to ripple, like the surface of disturbed water.
Suddenly, colored lines emerged from the tesseract, stretching and branching out, forming intricate geometric patterns. These lines intersected, penetrated each other, and created four-dimensional objects that couldn't exist in three-dimensional space.
Rizal watched in awe. He felt like he was witnessing a new language, a communication system beyond words and symbols.
"What... what is this?" Rizal tried to articulate his question, though he knew the tesseract might not 'hear' in the same way humans do.
The lines pulsed, as if responding. They approached, surrounding Rizal, and he felt a tingling of static electricity all over his body.
Images flashed through his mind. He saw a massive explosion creating the universe, spirals of galaxies spinning in a cosmic dance, and subatomic particles interacting on a quantum scale.
Then, as quickly as they had appeared, the lines vanished. The tesseract returned to its original form, spinning slowly in the now slightly more 'filled' white space.
Rizal took a deep breath. He didn't fully understand what he had just seen, but he knew he had witnessed something extraordinary. Something that could change everything.
"Tesseract... did you show me the fourth dimension?"
The tesseract spun, as if nodding.
"And... Professor Indri... can you help me find her?"
The tesseract spun again, this time more slowly, and Rizal felt a glimmer of hope.
The journey to understand the fourth dimension and to find Professor Indri was still long. But Rizal knew he was not alone. And in this abstract white sea, he might just find the answers to humanity's greatest questions.