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how a loose wire can lead to strange network issues

On Thursday I started having weird network issues where my skype would disconnect and network would be choppy. I had to use my 3G on phone to make skype calls with team. But streaming services like netflix would work fine.  I tried all things from changing DNS to restarting router to shutting down extra devices.  Finally I remember last time it happened the time warner cable had asked me to plug the laptop directly to modem to weed out router issues.

To do this I was connecting modem with ethernet and it also was choppy and suddenly I thought let me check the connections and found that the incoming cable connection to modem required 1-2 turns to tight it. Thats it all issues solved but this loose wire definitely gave me some heart burn for 2 days and even to my son who would start complaining because his netflix would constantly start showing the red download bar :).

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