[adding off-topic]

They also didn't know about the unstability of the electricity that also can 'quicken' the 'aging' process. You know, when the frequencies on the hardwares are unstable due to the power. Out of their knowledge, each house has its own power consuming. Anyhow, I believe those people are not taking engineering or computer science course. Even IT course doesn't really mention about this matter unless if the course falls into the category of hardware engineering. Plus, there are many 'kids' in LYN.