Question : DC circuit ground safety.

Hello,

Please see the attached image (from the allaboutcircuits ebook series). In that circuit, it shows that the person receives a shock, which I find a little confusing, but I also have these questions:

1) As the ground is connected seemingly directly to the negative terminal then this seems to ruin the circuit, as the electrons wouldn't flow from the negative terminal to the positive, but would surely flow directly from the negative terminal straight to the ground (blue arrow)?

2) It states the person would get a shock and assuming they did, would this be because of electrons flowing from the person-ground to the positive terminal (red arrows)?

3) It seems that either current can flow through the load or the person, but is this diagram assuming that the load has a larger resistance than the person?

Thanks,
Uni

Attachments:

Shocker.png (22 KB) (File Type Details) 

Shocker

Answer : DC circuit ground safety.

Depends on the motherboard whether such RAM would typically run on the board - per crucial.com your model of laptop apparently is only "supposed" to support PC5300.  You don't risk anything by running the higher grade that you currently have in.  It will either work, or it won't - in this case, you've found what is likely a very handy undocumented workaround.