While bitcoin is no longer a good currency, it's still the best store of wealth - the crypto version of gold, due to massive PoW mining infrastructure.
While other cryptocurrencies may give you near perfect anonymity or sub-second transaction times with no fees, none of them are so secure and dependable.
That 1.3 GHz Core M chip will boost to over 3 GHz for short periods of time. It will perform very similarly to a Skylake i5 in tasks like web browsing, but will throttle aggressively under a sustained load. That's where the 1.3 GHz number comes from.
As for the new Skylake i5 - Iris graphics are a huge step up from the 4100 model, but overall there isn't much reason to upgrade. CPUs have been stagnating in terms of performance for a few years now.
I am always surprised how little focus there is on the mental aspects of overeating. Losing weight is really simple - consume fewer calories, eat less processed stuff. And yet so many smart, otherwise capable people struggle with weight loss despite having an excellent knowledge of modern diet plans.
Food doesn't get in a person's stomach by accident, a decision is made with every meal, especially when a person is aware of being overweight. So why do people continuously keep making wrong decisions for many months and years?
My case was simple - I was depressed and food made me happy. Making a decision not to eat something was mentally painful. Fixing things that were wrong with my life eliminated both my depression and my issues with overeating.