If you give the same problem to a number of engineers it is possible to get different solutions, each carrying something from the personality and the background of each person. Of course, there are specific patterns to be followed but again, there is plenty of room for improvisation.
When you hug a person for a few seconds it’s mostly natural. We all do this more or less with friends and relatives especially when you meet after a long time… right? Have you ever hugged somebody for more than 5 to 6 seconds? When was it? What happened after? I remember for example hugging…