Learning and implementing fireground hydraulics

Fire service hydraulics is one of the most important concepts for a driver/operator. To be more specific, theoretical hydraulics is the starting point of learning fire service hydraulics. If you are a current driver/operator, how has the foundation of theoretical hydraulics helped with learning and implementing fireground hydraulics? If you are not a current driver/operator, find an experienced driver/operator to discuss how theoretical hydraulics has helped their understanding of fireground hydraulics. Reflect on their answer and how this may affect you.