Advanced? Cockroaches can survive in nuclear reactors and can eat pretty much anything. Perhaps they were made by a super cockroach? Your problem is you're making the same fallacy I mentioned earlier.
Cockroaches aren't intelligent, however. Intelligence is the key component of complexity. We, in being so vastly more intelligent, and self aware and conscious beings, are far, far more complex than any cockroach.
Come on, "apply the possibility". No, it has absolutely no evidence but we can't rule it out because it is "possible" - and, because it is possible, it gives us reason to teach it in science class.
You are missing the key, which is categorization. Most certainly, sausages and mashed potatoes are possible, but there is no logic behind this.
And again, they would fall under "natural beginning"
Remember, the categories, based on our observation of the "forces" behind causation, are intelligence and nature. By saying intelligence, you do not imply anything further than intelligence. You do not imply the identity or intent or ability of the intelligent entity. By saying nature, you imply only that the beginning was not intended by any form of intelligence, and therefore your sausage explanation would fall under such category.
Think broadly; you are thinking specifically down to detail of content, which is irrelevant, because content has no logical basis. If you truly cannot understand what I am saying, then further discussion is pointless.
Therefore, in them being the two possible concepts, we should teach them both.
Hey, this is your show. You've already redefined the word god to mean alien being:
"Secondly, by "god" I mean a higher force. This, of course, does not have to be supernatural, but simply higher. It could be an intelligent civilization that is very natural like we Humans."
"god" means only more advanced. Would we not be gods to any sort of AI we create?
I would at this stage ask that you drop such terminology - to help yourself if nobody else. Look, by "tennis" I mean a cup of tea <-- see how silly that is? When you use a defined word to mean something entirely different you run into problems.
What exactly is the defined meaning of god? If you wish for me to say "advanced intelligence", then so be it, I shall.
Then your first 4 words are the pertinent ones.. As such, stop using the word. Could an advanced race of aliens have created our universe? Perhaps, indeed I saw something like that on Star Trek once.. Maybe we should teach the concept in science class.. Hmmm
Again, with specifying. This "advanced race of aliens" falls under intelligence, which is the important aspect. It does not matter if the big bang was caused by giant mashed potatoes (naturally, in the lack of any intent) or by alien beings with four eyes and four heads; what matters is their categorization, which we
know to be true, in our observation of the forces of causation. What is impossible to know is the actual details, but we KNOW that our universe either came to be naturally or was created.
Then what shall we teach? An alien civilization having created our universe, to me, is entirely a rational and logical idea; it's impossible to know, however.