Depends what you mean by 'Best' ... there's some that are ready to go mainstream if only they can get the funding and support - and there are others that promised to give the best benefits ......
No, because technology isn't just what people make, technology is also grass, water, etc. Technology is everything in this world, in a way. Trust me when I say this, because I had to do a home work...
If a pieace of other technology is old and want new technology you need to build a new type of technology that you could use and do other stuff like using something old and making it new!
technology is the sciencetific knowleadge(eg:I-PHONE)technology makes human live easy like phone we dont need to go to friend house and tell him just call him thats technology can do*
Digital technology is preferred to analogue technology because digital data can be endlessly copied, edited and transferred without any loss to the quality.