Simulators are sophisticated technological systems designed to replicate real-world processes, mechanisms, or experiences to train users efficiently and safely. These systems range from simple computer-based programs to full-scale replicas equipped with complex sensors and feedback mechanisms. The core purpose of a simulator is to mimic actual conditions closely enough that skills learned or tested on them can transfer directly to real-world applications.

• Safety: Simulators provide a safe training environment where risky situations can be encountered without real-world consequences, thus preserving physical safety and reducing material costs.
• Efficiency: Training on simulators can be more time-efficient, allowing repeated drills and immediate feedback that is not always feasible in real situations.
• Customization and Control: Trainers can customize scenarios to meet specific learning objectives or to focus on particular skills, and they can control environmental conditions, which is impossible in real life.
• Data Collection and Analysis: Simulators often have built-in mechanisms to record actions and outcomes, providing detailed data for debriefing and improvement.