evidence: While pure waterjet cutting can be used to cut softer materials, abrasive waterjet cutting is required to cut through harder substances such as metals and ceramics. This is because abrasive particles like garnet or aluminium oxide are added to the high-pressure water stream, which increases the cutting force and allows for effective cutting of hard materials. Therefore, the claim made in the post that water alone can cut through the hardest materials, including rocks, metals, bulletproof glass, and diamonds, is MISLEADING.