Rachel swallowed.  It was very strange seeing herself as an eleven-year-old.  These days a lot of new parents bought camcorders, so many people would end up with such a window on their past, episodes of their lives recorded as though they were characters in a soap opera, but they'd know they were being watched.

She'd always wondered why she'd been wary of getting a mobile phone.

'That was the man we saw,' Marnal confirmed.

'Do you know he's a Time Lord?'

'Yes.  He had two hearts.  So... he calls himself the Doctor?'

'Do you know him?'

Marnal shook his head.  'There was no reason to think I would know him personally.  So, he had a daughter.  And he seemed to be trapped on Earth at the time.  No TARDIS?  And he said something about not having all his memories.  Interesting.  I will have to do more research.'

'Could you look at anything using that bottle universe?' Rachel asked.  Everyone had things they didn't want other people to see.  For that matter, everyone had plenty of things they didn't want reminding about.

'Anything,' Marnal said, busy scribbling in a notebook.  'Now I have his trail, I should be able to follow his entire time-stream'

'It would change the world,' Rachel said.  'To see the past like that.  Instead of trying someone in a court you could just play the tape.'

'It doesn't just view the past,' Marna! said offhandedly, 'it shows the present and future too.  It's all relative.'

'The future?' she said.  She was getting that twitch in her leg that she got when she was really scared.  'I could see my future?'

Marnal turned the notebook over.  He'd filled the second half of it with impenetrable equations.  'It's a little more complicated than that.  you have free will.  If you could see your own future you could alter it.'

Rachel nodded, a little relieved.  'If I knew I was going to be run over by a bus when I was still a young woman, I could avoid buses for a few years.'

'You could certainly try,' Marnal agreed.

'This... thing,' she said, waving her hand over the bottle universe.  'It's like magic.  Cold fusion and going to other planets?  We've at least heard about those.  We can't do them yet, but it can't be much longer before we work out how.  But... this?'

Marnal gave her a condescending smile.  'Your race hasn't even reached Type 1 on the Kardashev scale.  It doesn't control the resources of this one planet, let alone a solar system or a galaxy.  The Time Lords were the Type 4 civilisation.  We had no equals.  We controlled the fundamental forces of the entire universe.  Nothing could communicate with us on our level.  Most races pray to lesser beings than the Time Lords.'

'Yet my planet is still here, and yours isn't.' Rachel said.

Marnal's face seemed to grow dark.  'Indeed.'

'And you really think the Doctor did it?'

'I know it.'

'But he was helping mankind there.  Without him, the Network would have conquered the Earth.'

'He was interfering, don't you see that?  Breaking the most sacred law of the Time Lords.'

'He saved lives.  Including my life.'  She hesitated.  'And yours, for that matter.  You were on Earth then too.'

Who is to say the Network shouldn't have conquered this planet?  What gives the Doctor the right to pick a side and fight for them?'