Possible Clues:

• Assimilation of ideas shows universe exists though origin's obscured
• So it's up to the doctor to get through to his little sister this way
• Nontaxing learning method
• Absorbing process I observed in very large plant
• Rings doctor: son is picking up slowly
• Contamination process
• Gradual assimilation of universe is not requiring carbon
• Something like dialysis thus rejected by doctor and sister
• Effortless learning method
• You might gain knowledge through this