Well, I understand that they're free to make up the rules, but meeting your future self in the future really doesn't hold up to scrutiny or logic, which is why I can't buy it.
For example, when Hiro traveled several months into the future and went to Isaac's loft after he had been killed by Sylar, the police had Hiro call home and he spoke to Ando. And Ando told Hiro that he'd been missing for months and no one knew where he was. That's consistent with how it works. But that contradicts the episode later in the season where Hiro travels five years into the future and meets his former self. That shouldn't happen because there's no Hiro in the timeline to become future Hiro, because Present Day Hiro jumped over that time.
It's just like how space movies depict people either explosively decompressing or instantly freezing if they're exposed to the vacuum of space. In reality, neither of those things happen if you get sucked into space. Space is just one atmospheric pressure lower than Earth at sea level, so while you could get a case of the bends(like deep sea divers if they come up too fast), or you could get a pulmonary embolism or your lungs could hemorrhage if you don't vent the air out of them, the most that'll happen is that the skin on your hands, face, and feet would swell and you'd get hypoxia, but that's it. You'd still have less than a minute to get back inside your spacecraft before passing out from lack of oxygen, and after three minutes you die from brain suffocation.
As for instant freezing, that can't happen either. There's no air or liquid in space to make you feel cold, like if you were outside during winter or if you fell into a lake or pond full of cold water. Space has no matter, so there's nothing touching your skin to take the heat out of you by conduction or convection, so even though space could be hundreds of degrees below freezing, you wouldn't feel it. Your body would continue to radiate normal body temperature of 98.6F which would keep you warm until your body radiated all the heat out you, which would take hours to do, and by which time you'd already be long dead from suffocation. Of course, if you got sucked into outer space anywhere near the sun, like near the orbit of Venus, you'd start to burn because then the temperature of space around Venus would be well above 400F. But in Earth's orbit, the temperature of space is about 50F, so it's like an average Spring day.
