5 Greatest Inventions by Accident

All of inventions are done with an accident, if you really read the history of inventions you would really see how it's done really. And I am too dissapointed that much many things do not go like in past for like 20 years straight or more anyway. Thanks.
How have you honestly find out that course anyway ? And that forum ? I am still waiting when people will invent something from cancer or aids or something like that anyway. Do you have any real information about it ? Do let me know please. There is also a room for invention for all possible heart diseases like you may know.... you may ask your parents about it. What do you say ?
Something seriously block people from publising their inventions anyway with whatever reason you may really have and help there. I assume something must really be done there for whatever reasons. I like the fact that some people already admiting problems.

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