2015-12-31

How to have a better life

If you could take a drug that gives you 100 years of constant pleasures in your bad, with no side effects, while someone would feed you by a tube, would you take it?

If you think a bit about this question, the answer has an interesting consequence: there must be more in life than physical pleasures.

2015-12-30

We believe in a compressible Universe

"Believe" is often associated with religion. However, even for using the "scientific method", we are forced to assume certain qualities of the Universe that we cannot prove nor fully verify. The most basic assumption is that there are common laws that are universal and they function the same across the whole Universe. This is a leap of faith that we have to take if we believe that the Universe can be understood at all by humans.

2015-12-21

Two ways to pursue happiness

Intelligent people learn to adapt to environment, 
unintelligent people adapts environment to them 
(popular joke)

1. Change the outside

Few people can be happy when basic needs are not met. When you are hungry or in pain it is unlikely that something would make you happy. Even with the basic needs fulfilled, many people have higher order needs, like being appreciated, achieving their highest potential.

2015-12-16

"Bose QuietComfort 15 / 25 / 35" vs "Sennheiser MM 550-X TRAVEL" (noise cancellation headphones)

On short
QC25, QC15, MM 550-X
  • Bose Quiet Comfort (QC) 15 / 25 / 35 have superior noise cancellation and are slightly more comfortable.
  • Sennheiser MM 550-X have Bluetooth connectivity and a more "audiophile" sound. Update: QC35 also has Bluetooth.

Noise cancellation headphones - "how it works?"

"Noise cancellation" is a feature in recent high-end headphones that aims to actively remove the outside noise while listening music. You can also use them without music, however the efficiency is lower. "Noise cancellation" is a relatively new technology and you must be aware of what is reasonable to expect from such headphones.

Noise cancellation - how it works

2015-12-05

Music and mathematics


In a temperate musical octave, there are 12 possible sounds. However, in a certain melody, usually, only 7 of them are used. When you see, for example, "Symphony...in Do major", you should expect that it is based on the white piano keys only. When using others scales, like for "Symphony... in Re#", some of the white keys will be replaced by some of the black keys.

Let's see the 12 keys in one piano octave: