Maybe there's something I'm missing. But House is supposed to be a tech genius, right? The chip holds the data that upgrades the Securitrons to Mark II. Now, Mark II is an operating system, so it should be a lot harder to write that. But House already designed the chip before the war, so I assume he knows how to do that. We know House started sending his Securitrons around New Vegas in 2274, but he was already awake 136 years before that, in 2138. Why couldn't a tech genius write a new operating system for his army, instead of looking for a chip that he wasn't even sure still existed? He literally had more than 100 years to write that. And sure, he needed the chip to open the doors and update his new army in the Weather monitoring station, where Caesar's fort is. So he couldn't have found a new way to open that door, even if that means hacking his own tech before someone like Caesar arrived? But even if that was impossible, wouldn't it be easier to locate the chip and then upgrade his army in the monitoring station if his Securitrons from the Lucky 38 already had a new OS that he could have written? I mean, he had time to code Jane and couldn't do that? Am I missing something?