What Is the Best Invention Ever?

Answer

Some of the best inventions of all time include: immunization or antibiotics, harnessed electricity, plastic, transistors, computers, steam engine, pesticides, automobile, printing press and modern plumbing. Immunization or antibiotics have served to increase human life span as a few centuries ago many people died due to infectious diseases.
1 Additional Answer
Interestingly, the toilet is the best invention of all time. Without toilets and plumbing any tall building, apartments, office towers and dense city centres would be impossible.
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