ELI5: Explain Like I'm 5

p systems

P systems are a type of computer model used to simulate biology. They use special rules and instructions to show how different parts of a biological system interact with one another. Think of it as an imaginary microscopic world, where each 'particle' or rule follows a set of instructions to achieve certain outcomes. This can help scientists understand how biological systems work, and make predictions about how certain changes could affect these systems.