After enough time for discovery, you can force the other side to produce proof on every element of its claim — or lose it.
Texas gives defendants a powerful tool: the no-evidence motion for summary judgment. It says, in effect, 'you have had time to find your proof; show it or the claim is gone.'
The claimant must then point to actual evidence on each challenged element. If it cannot, the court dismisses the claim. This is why a plaintiff who files without proof, hoping to find it later, takes a serious risk.