This was a thought experiment with a four-year-old child about the effects of swallowing air in different environments. The main points to consider are:
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The question itself is an interesting way to engage with a child and spark curiosity about the effects of air on our body.
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The answer demonstrates that our perception of weight can change depending on the environment we are in. Swallowing air doesn't make us lighter in general, but it can affect our buoyancy in water or our weight relative to a surrounding gas like helium.
In summary, the webpage provides an engaging story about a parent teaching their child about the effects of swallowing air in different environments. No matter what you will be heavier as a result but it depends on the surroundings whether that changes things.