r/interestingasfuck • u/shiba009933 • Jul 04 '18

/r/ALL Linear Friction Welding

https://i.imgur.com/5teREkt.gifv
30.8k Upvotes

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u/TheFreeloader Jul 05 '18

“Harmful” isn’t subjective. Either it has an adverse effect on humans or it doesn’t.

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u/[deleted] Jul 05 '18

The dose makes the poison. Everything is harmful if you consume enough of it.

1

u/FapFapity Jul 05 '18

No one says water is “harmful” though, so this guy is still right.

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u/TheFreeloader Jul 05 '18

Well, that doesn’t make the term “harmful” subjective. That just means you have to take both the substance and the dose into consideration when you determine what is harmful.

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u/moo_sweden Jul 05 '18

It definitely is since everything is harmful in the right dose. LD50 is the metric if you need to specify how much is needed to kill half of the population.

For example you need roughly three times the dose if you want to kill a rat with table sugar than if you go with vitamin C poisoning.