ultra portability +1 / -1 reliability

Ultra thin, lightweight, robust air because no engine: no hard drive and no fan and therefore no noise.
Problem: a single RAM slot and the bar is welded so no possible evolution and it's a shame because the fact that there is no processor fan is clamped so as not to heat up (already 45 degrees to bear on the knees ...)
Touchpad without buttons, and left click area begins to be much less sensitive after only one month of use, it is very worrying for the future, especially as a result of this portable SSD is expensive ...