9.4 Regurgitation Probability

Regurgitation probability is the probability that gastric contents or hair aggregates are expelled upward.

Vomiting or regurgitation is an output event, not a root cause. Backtrace through Gastric Emptying Speed, Gastric Hair Residence Time, fat entry timing, and pathological boundary assessment.

Frequent vomiting, blood, pain, refusal to eat, and lethargy enter Clinical Boundary Layer.

Mass formation before upward expulsion.

Alternative path: onward passage vs regurgitation.

From upstream food structure and gastric release.

upstream food structure

↓

gastric timing and hair variables

↓

regurgitation probability

↓

hairball vomiting (observable output)

Hairball vomiting index records the output event for Observable Output Backtrace.