Update README

README.md

@@ -6,7 +6,9 @@ license: apache-2.0
 
 Webpage: https://world-bench.github.io/perfectphysics.html
 
-PerfectPhysics is an evaluation suite focused on rigorous, quantitative assessment of the physics-accuracy of video generation models. The benchmark includes curated physics experiments spanning from motion physics (e.g. gravity, projectile motion) to fluid dynamics (e.g. viscosity, fluid motion). Each scenario will have initial context frames and will require models to generate the future frames. Core physics constants such as gravitation acceleration, viscosity, friction, and more will then be estimated from generated videos.
+PerfectPhysics is an evaluation suite which tests how well world models and video generations adhere to well-known physics constants and laws.
+
+The benchmark includes curated physics experiments spanning from motion physics (e.g. gravity, projectile motion) to fluid dynamics (e.g. viscosity, fluid motion). Each scenario will have initial context frames and will require models to generate the future frames. Core physics constants such as gravitation acceleration, viscosity, friction, and more will then be estimated from generated videos.
 
 This repository contains the input videos for the PerfectPhysics weekly challenge. It will be updated every week with a new set testing a new physics constant or property.