The bottomline is package tracking systems depend on people and people are flawed.
I purchase a great deal through the internet most of which is mailed with tracking. I have seen a trend of about 1 in 5 packages whose tracking is erroneous, i.e. it never shows in the system and arrives without ever having a status.
With one exception of some books whose package broke open and books were lost I have not had a disaster with the post office in over a decade.
While I could criticize them when you consider how much they get right, I remain amazed.
That said there is always tomorrow
