Changi Airport Security

How I wished our airport security was good enough so that additional measures aren't necessary. Can I conclude that we were vulnerable but lucky? Coming from the fiascos at the Woodlands Checkpoint, I am not surprised that there are now additional measures at Changi Airport.

I don't know who authorities everywhere view airport security. Is it a zero sum game? Then the most secure airport is useless because nobody can use it. Similarly the most convenient airport has no security.

Learn this from the world of computing. They keep making the processors more powerful so that it can run security software in the background without degrading performance. Now what would the equivalent be for securing airports? If we fail to come up with solutions, terrorists will eventually succeed at paralyzing air travel as we add layer upon layer of cumbersome security.