Doctor Who: Concerning Davros's plan

Really, really liked the opening two-parter. I’m not here to squee about it and explain why, everyone else has already done it, just do a Google search.

I have a question though and some corresponding (over)analysis to do, after watching "The Witch's Familiar". Great episode, don't get me wrong, but I'm Watsonian, in-universe explanations, so I will EX-PLAIN!

OBVIOUSLY SPOILERS. IF YOU HAVEN'T WATCHED THE FIRST TWO EPISODES, READ NO FURTHER.

In part one, Davros takes advantage of the Doctor's guilt about abandoning him when he was a child, to easily capture him, and rubs it in as well with the clip from the "Genesis of the Daleks". And the Doctor has of course obviously regretted his decision, hell, he is prepared and willing to accept an inevitable, and in his eyes deserved death, if it might atone for what he did, especially since he believes that he possibly contributed into the boy's descent into evil to begin with (“Who made Davros?”).

However, from Davros's point of view, he knows that the Doctor actually came back and rescued him later, while the Doctor doesn't, since he hasn't done it yet in his personal timeline.

Now of course, this makes tremendous amounts of sense from a character standpoint, and it's ingeniously diabolical: Davros locates the Doctor at a point in his timeline before he goes back to save young Davros, but after he has abandoned him (how? Well, if he’s nowhere to be found, his friends are also searching and can't find him, and he’s acting like a lunatic in medieval Essex, that’s the time, how does Clara do it? And I mean, if you want to be like that, the same way he doesn't accidentally get a poor, completely clueless 11, for instance), and takes advantage of his morality and guilt-trips him (p.e the screwdriver) in order to succeed in his evil plan, even though he knows that the Doctor will eventually save young!him. It is so evil.

But Davros has to find him at that exact point in his timeline, otherwise the Doctor won't feel ashamed and probably obligated to come. If it's earlier, he hasn't abandoned him yet. If it's later, he has rescued him, ergo no guilt to take advantage of. And we know that Davros does indeed manage to do that (“Do you know why you came, Doctor? You have a sense of duty. Of guilt, perhaps. And certainly of shame”, “I'm not helping you. I'm helping a little boy I abandoned on a battlefield. I think I owe him a sunrise”).

(The Doctor might have come anyway because of his compassion for a dying man -he does suggest so in the episode- but he would have come on his own terms, he would be much less emotionally vulnerable and therefore less easy to manipulate, and anyway Davros wouldn't just rely on that, he wants to be sure. Plus, great opportunity to make him feel bad and destroy his entire philosophy and worldview anyway, he’s not gonna throw it away).

However, doesn't he intend to kill the Doctor? And if possible, trick him and steal his regeneration energy? Which would probably also kill him? And even if the process left him alive, he is still on Skaro with a bajillion Daleks and (apparently) no TARDIS. They are so going to kill him, how is survival a possibility here? The Doctor himself doesn't expect it (meditation, confession dial, parties, goodbyes, and all).

My point is, Davros's plan is brilliant, but how does he expect to be rescued in the past by future!Doc since the plan is probably going to kill him, and future 12 therefore won't exist anymore/be able to go back to save child!Davros? He is jeopardising his existence or at least creating a paradox. It seems a bit reckless, that's all I’m saying.

My possible explanations, Cunning Planning 101 with Davros:

1) The Web of Time is a thing. He assumed the timeline would be maintained anyway, that he'd survive the Hand-Mines some other way. Nobody said it’s a fixed point. Time can be rewritten, he used the sonic, someone else came along, another incarnation of the Doctor appeared perhaps etc.

2) It's implied that he only recently remembered the whole encounter, maybe the details are fuzzy. The occasional Dalek understanding the concept of mercy or not, he might not actually consciously remember that the Doctor came back and rescued him in the first place, the exact circumstances of his survival. (In which case his plan is slightly less diabolical, it’s more extreme revenge-y, “there, fuck you for leaving me, you son of a bitch, oh, am I taking this too far? Sorry, I’m a bastard”). And he can still gloat all he wants about compassion being a weakness like he does, fie on goodness etc, since from his perspective the Doctor just ran off, and has still missed many opportunities to actively kill him.

3) He's quite sick and on the brink of death. He's like "fuck the paradox, fuck the universe, it might work; I have nothing to lose. Pfff, Doctor’s dead, what a change. I'll send the rejuvenated Daleks to pick young!me up, if the universe can't take it, not my problem.”

4) This is Davros we are talking about, so let’s get dark(er). Let’s assume that the Doctor survives the whole energy drain thing, not that far-fetched. So Davros is like “You and these Daleks will take your totally-not-destroyed Tardis, (I know you), and go back and you’ll rescue young me, or I really destroy it, you, the Earth, and 20 other random planets with my awesome Time Lord/Dalek hybrids, and there’s nothing you can do to stop me in your present condition. And oh no, I've given you no word to keep. In my judgment, you simply have no alternative”.

5) Same as 4, only he doesn’t know about the TARDIS surviving, but the Daleks can time travel quite well on their own. No strange blue box this time when the Doctor goes back, but that’s a minor change, and I bet he hardly noticed it being there anyway, so no paradox at all.

6) Let’s assume that he dies. Well, okay, I’m terribly sorry, this is horrible, but Dalek puppets are a thing you know, and conversion works on recently dead individuals too, even resurrecting those whose brains have not yet decayed (otherwise, the subject’s just reanimated, essentially a zombie). “But he’s a Time Lord!” Yes, and the only piece of evidence we have that suggests they are immune to it is Amy’s speculation in AOTD. It is entirely possible that Rule 1 was in order, 11 was in his usual reckless/chivalrous mode, and the nanogenes were affecting him, only slower than they were affecting Amy, and he decided to protect her instead, taking a gamble that he'd be able to get business sorted out and get off the planet quickly enough. Plus, you know, the Cybermen weren't able to convert Time Lords either; and then came Nightmare in Silver. So there, you get the point.

7) Davros just didn't think it through, Silence style. Hey, genius or not, he did forget about the sewers. And he's probably not good at thinking fourth-dimensionally. Especially about something that happened when he was 10.

Any thoughts? Am I missing something? Do correct me/add things if you like.

And forgive me for not tackling the beautiful imagery, and the acting, and the meta, and the moral conflicts, and the irony, and the symbolism, and all the amazing things, but again, these are already being praised like there’s no tomorrow by people with far greater skills than mine.