Yep, good points above.
I admit I'm no expert on time travel, but seems to me they don't have a good grasp on it yet, or they lack some controls in place, and some changes could affect them in an undesired and significant way.
I admit I'm no expert on time travel, but seems to me they don't have a good grasp on it yet, or they lack some controls in place, and some changes could affect them in an undesired and significant way.