Answer :
The greatest invention of all time was the air conditioning. In the summer months there is nothing better then to kickback inside and be cooled off my the nice air that comes out of it. Willis Haviland Carrie was an absolute genious when he came up with this fine invention.
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according to me mans best invention is electricity and modern gadgets. without electricity we cant imagine our lives. today it is playing a vital role in our lives. we cant do any thing without having electricity today. each and every appliance is running based on this electricity only. now a days each and every home has an inverter and generator.Technology has become a very important part of our lives nowadays. During the past few years, technology has evolved in many ways and is probably without a doubt better than ever before. People are always trying to find something new that will improve our lives dramatically. Some of the creations that have really changed our lives are the computer, telephone, internet and electronic mail, television, cell phone and voice mail.Today, There is no work which cannot be done without the assistance of machines and there is not a single area of human activity where machines don’t have to be used. No one can deny the fact that gadgets have not only simplified our lives but also made them more comfortable and luxurious. so according to me modern gadgets are the man's best invention.