Warning: Do not attempt to alter the Closed Timeline. Your actions may have unforeseen consequences. Or not.
As an expert in the field of Quantum Physics, I must inform you that any alterations made to the Timeline will result in the immediate creation of a new, parallel universe, where the consequences of your actions are... interesting.
For your safety, we recommend avoiding the Timeline at all costs. However, if you must navigate it, please refer to our Guide for Beginners for more information.
Or, if you're feeling particularly brave, you might want to try our Expert Mode, where you'll be guided through the process of creating a stable wormhole. But don't say we didn't warn you.
Remember, time travel is a serious business. Don't mess it up.