The cost to go backward…

In this article (The Four Horsemen of the Cyber Apocalypse) , it talks about the possible scenarios that will paralyse digital system. They are certainly valid but I can’t stop thinking of a this question, what is the tipping point for people start to move back to paper-based system?

Given the current database and networking technology, there’s almost no real “safe” system that can be created and left alone without being upgraded. Let alone the attach to cloud based service, for institutes that efficiency is not the top priority, paper based system could be a better solution in terms of security.

In the Silo series written by Hugh Howey, it described a post-apocalypse scenario that the whole human kind lives underground. The “history” of the earth is being modified and changed in the database so no one really know what happened, except for the managements of the silos. This top administrator of the silo has access to physical books, which document the “real history” of the past.

Let alone whether there’s a “real history/reality“, just by thinking about this digital history rewriting scenario is scary enough. There are legal requirements for some institute to keep paper-based record, but is there any company/institute that want to move back to paper-based record/database from a digital system? What is the cost of it? Is there any formula for that?

To boil it down to one question, how much does it cost to convert a database (e.g. MySQL/Postgresql) to a paper-based system?

How we see the world differently with mobile phone- VVS

This is probable an old video, but it is really funny. Shooting video in portrait with mobile phone, also known as “Vertical Video Syndrome”/VVS.

What we can see here is the merging of 2 different technologies (video tech and mobile phone). The vertical format of most mobile phones is definitely a sensible design, but it wouldn’t work when the orientation of the camera (landscape/portrait) correspond to the orientation of phone. What is the solution?

A simple approach maybe having a phone that shoots in landscape mode while being hold “up-right”.

Mm… why isn’t there a phone like this?

Prejudice and door lock

Which one is more powerful? A door lock or prejudice?

I encountered 2 broken door lock incidents in the past few days, luckily nothing went wrong. 

One of the door usually requires a smartcard to open, as the system was faulty that day, someone disabled the lock to make sure people have access to it. However I still swipe my card every time when I push an unlocked door…

Here’s an image of a classic InfoSec theory (Which is about “CIA”)


It talks about integrity, availability and confidentially. If you are living in an apartment building in Hong Kong, most of the time if you forgot to lock the door, nothing will happen. The challenge for anyone who’s trying to break in an apartment/system is that there’s a cost for testing each door. Most people will assume a door is “locked”.

How about when we try to share a new idea? Do we assume people will not take it and just drop it? To me, prejudice is much more powerful than a door lock, cause after all, we all assume a door lock can lock the door… but it isn’t always the case.