/u/killermelga's posts in /r/askscience

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Is there any scientific validity to the phrase "It's like riding a bicycle", meaning that knowledge is forever ingrained in your brain?

571 upvotes

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Is our circulatory system one giant loop that involves all blood vessels or is it composed of many smaller loops which don't connect to each other?

7 upvotes

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What are those light spots we see when closing our eyes and why do they "flee" when we try to focus them?

1 upvotes

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Would it be theoretically possible to create lightsabers that interact with each other the way they do in the Star Wars movies?

1 upvotes

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Why do our fingernails fall "just like that"?

1 upvotes

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Is taking a vaccine more, less or equally effective at protecting people from new virus variants than actually having the disease in question?

1 upvotes

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Would it be healthier to have a balanced diet while being as sedentary as possible or to exercise a lot but just eat junk food?

1 upvotes

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
Is there any scientific validity to the phrase "It's like riding a bicycle", meaning that knowledge is forever ingrained in your brain?	571
Is our circulatory system one giant loop that involves all blood vessels or is it composed of many smaller loops which don't connect to each other?	7
What are those light spots we see when closing our eyes and why do they "flee" when we try to focus them?	1
Would it be theoretically possible to create lightsabers that interact with each other the way they do in the Star Wars movies?	1
Why do our fingernails fall "just like that"?	1
Is taking a vaccine more, less or equally effective at protecting people from new virus variants than actually having the disease in question?	1
Would it be healthier to have a balanced diet while being as sedentary as possible or to exercise a lot but just eat junk food?	1