Macbook Pro 2.2 GHz Core 2 Duo initiates spontaneous start up from shut down

Question

  Peculiar behavior from a "new to me" Macbook Pro 2.2 GHz Core 2 Duo . Having purchased this from a local chap , I have begun to personalise the device , naturally . I have come across this profoundly unreasonable behavior , if it can be called anything a "Spontanious Start Up" will do for now . Occurring after employing a software shutdown , being previously removed from a power source , this has now twice resulted in indirectly observing that the computer spontaniously started up while I was away from it . This is about the extent of individualistic behavior exercised by the device that I am aware of in its less than one week of welcome into the house .
  There is a cat whose legerdemain lies in eating , sleeping , biting , shedding fur , and occasionally reminding mice who is the predator . Smokies interests though vital have not been , aside from attractively swinging , feckless wires , directed towards learning about computers .
   If there is an explanation I would certainly be edified in entertaining a cause as none , practically , are apparent to me . Aside from evil malware commanding the computer to do its bidding I have no plausible idea .
  That this seems quite contrary to ordinary domestic electronic device behaviors , with no results in an identical google search . This issue strikes me as presenting a possible unfriendly , specifically unwanted , idiosyncracies .
  Thank you for taking the time to read this . FRP

Answer 1

It might deteriorate until the button doesn't work at all, or it might not. It will just be annoying in the mean time.
As far as the console logs go, I've never been able to identify this particular issue by trawling through them. And I think the reason for that is that it just logs it as Power On / Shutdown.
Aside from that there really isn't anything I can think of that would help you diagnose this problem further.