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Comment That depends... (Score 1) 177

...on how you rate the innovations from the various eras.
The development from mass starvation to beinga ble to feed the polulation is obviously more important to most people than the iPhone.
So the question cannot really be answered, as each era haas had its innovations which were really important at the time, while may seem trivial now.
It is also important to note that most innovations depend on previous innovations, so you rate one innovation without knowing what it is based on.

Comment Re:the kindles biggest competition (Score 2) 88

> Whats the total life of a kindle? Do they trade them in/up? can you swap the battery like a smoke detector?

I have a Kindle which is close to 10 years. No problems with the battery. And as the Kindle cost less than a decent bookshelf (and a fraction of a decent phone or tablet), what is the problem?

And, btw, how many free books can you pick up in physical format? There are literally thousands of classical books out there at no cost in electronic format.

Comment Re:the kindles biggest competition (Score 2) 88

> I just dont really understand them.

When I want to read a book, I usually want to read it NOW. Which I can do. Buy on Amazon, turn on WiFi on the Kindle (usually off to save on the batteries), and a few secods later, it is there. And a few more mouse clicks, it is on my wife's Kindle as well. And I do not need extra space in my luggage to carry the book. Or all the other ones.

Comment Extremely inefficient (Score 1) 63

The buzzword here is that they use solar power to extract and convert CO2. Sounds nice for those not into the pysics of energy conversion and chemistry.

It is a lot more efficient to use the solar power to reduce CO2 emissions by replacing the burning of fossile fuel with solar energy. Pulling CO2 out of the atmosphere is extremely costly on the energy balance, and should be avoided, except in the form of planting some trees.

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