I would add birth control pills (or perhaps effective contraception in general). All the internet and computers in the world don't mean much if you're chasing after 18 kids all day!
What no duct tape!
I don't think the steam engine is any longer relevant. I might have added, or substituted, refrigeration.
What about sliced bread?
This is not going to make the 2,056 year old man happy. Back when he was 2,013 years old he said the greatest invention of all time was Liquid Prell....
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