> and it was quite intentionally designed for users to upgrade and repair Only for the battery. Failure rates on the memory and hard drive components were far

> and it was quite intentionally designed for users to upgrade and repair Only for the battery. Failure rates on the memory and hard drive components were far higher than we have today. And it didn't benefit Apple at that time to be soldering them to the logic board since thinness wasn't a concern i.e. due to the DVD drive dictating size.