Death Note Episode 15 + 16

I sympathize with anyone who's confused at this point. Most of the time with complicated plots, you need to keep track of who knows what. In Death Note you also have to keep track of who's forgotten what! Yeesh. So now I want to switch over to two of Tim's favorite topics: the future of human social evolution and Arc Raiders. Tim has mentioned several times the question of how long it will take humanity to move beyond self-centered thinking, and I think you could actually use a game like Arc Raiders to measure progress towards that goal. For those who haven't heard of it, Arc Raiders is what's called a PvPvE game, which stands for Player vs Player vs Environment. In a nutshell, players can choose whether their interactions with other players are hostile or not. Although the games developers enabled PvP in their game, they actually don't do anything in particular to encourage it: none of the progression systems are based on PvP, there are no leaderboards, no ranks or bragging rights. The only thing you get from PvP is your opponent's gear, which you could have more easily gotten by fighting the AI enemies: the PvE portion of the game. So really, PvP has to be its own end. Fighting other players is more interesting than fighting AI enemies. But here's the thing: according to the metrics - somewhere around a third to a quarter of players rarely or never engage in PvP. This is not an accident, these players choose not to fight other players. To attack someone like that is basically to say 'my preferred playstyle should take priority over yours.' If people can't even respect someone's choices in a game, how will we expect them to do so when something serious is on the line?

I just want to clarify a couple things. First, Light's dad wanted to be confined because he was afraid he might do something rash that would interfere with the investigation otherwise. Second, Rem is female. And that's about it, Lupe already answered your main question

I don't know the exact reasoning for the 6 Minute 40 Second Timer that's used a lot, but I think it's worth noting that it adds up to 400 Seconds. The Japanese word for 4 is "Yon" or "Shi". In many situations, they use the former because "Shi" is also the word for Death. It could be a coincidence but it's a fun one. Oddly enough your "why not round it up to 7 minutes" could accomplish the same thing, as 7 in Japanese can be "Nana" or "Shichi" and for the same reasons, they use "Nana" in a lot of readings.

Yes, so what happened is the same thing with Light and Misa. So Misa told Rem she wanted to leave the Death Note, so when that happens, she forgets all memories about the Death Note, its existence and everything they did related to the Death Note. So when that happened, when Misa lost her knowledge, Rem left her, gave her Death Note to Light and left. Light then buried HIS OWN Death Note, and told Ryuk that no matter in what context, when he says that he "wants to get rid of it" (meaning the Death Note), Ryuk would consider it as Light giving up ownership of the Death Note, just like Misa did. So when he was confined, he said a sentence about his pride, and him having to get rid of it, when Ryuk heard it, he knew Light was giving up the ownership of his Death Note, hence Light forgot the Death Note, he could no longer see or hear Ryuk, he doesn't remember anything related to what he did with the Death Note. So now he's Light previous to finding it, but with the memories that don't involve his actions with it, so he remembers the investigation from an outside point of view, only as a detective now, and not like before as Kira himself. Now he KNOWS he is not Kira, because he doesn't remember any of it. So now both Misa and him have no clue about Kira and the Second Kira, they just know they are being investigated for it.