A big question

Lucy and I were walking to school on Monday. We were talking about the things we saw at a Museum on Sunday.
"What I really want to know," Lucy said, "is how it all began."
"How what all began" I asked.
"How it all began," she said. "The universe and everything."
I am not making this up.
I considered for a moment giving her a Douglas Adams answer. Something like:
"In the beginning the Universe was created. This has made a lot of people very angry and has been widely regarded as a bad move."
Then I decided to use a classic parental dodge.
"Remember that question," I said "and ask me this afternoon. I will have a good answer for you."
"Oh," she said, "I know, Google."