'By the seat of your pants' or multivariable predictive modelling.
Reeves
M J
MJ
Curtis
C R
CR
D000818:Animals; D003198:Computer Simulation; D003936:Diagnosis, Computer-Assisted / Q000662:veterinary*; D006734:Horse Diseases / Q000175:diagnosis*; D006736:Horses; D011336:Probability; D011379:Prognosis