there is a little game of connectors and cables going on 
in the electronics world. not just consumer, but i see it always
with headphones. it's a real problem. you've got to get your
connectors to connect without them failing over time.
and you've got to have cables that don't fall apart over time.
this may be a time tested ongoing problem like rust. connectors is
a big one. you've got to get connectors right. like aerospace right. it's
got to be perfect. 100% of the time. (or six sigma, whatever)
((e.g., processes of Six Sigma quality) are those that experience fewer than 3.4 defects per million ...)
per online

99.9999999999999999999999999%