You don't know that your equipment utilises satellites. You know only what you have been told they use.

I have looked into this flat Earth theory in depth, and I must say, I have a lot of questions that will need to be answered before I can say that the Earth is definitely not flat. I am however, at a point where I cannot say with any level of certainty that the Earth is round.

@fulltimegeek, interesting post, but I have a question. How can you believe that the Earth is flat, and that aliens exist? It is my understanding from investigating the flat Earth theory, that the strongest held belief among flat-Earther's is that evolution, climate change, aliens and outer space are all misinformation propagated for the sake of reinforcing the globular Earth model and hiding the fact that the Earth is flat.
What is your belief in regards to what the planets and stars are if you are able to justify the existence of aliens while adhering to your belief that the Earth is flat?

I had actually written half an article pertaining to the many unanswered questions surrounding this theory. Your post has now inspired me to finish it after I am done with the one I'm currently working on... I shall leave you with one more question though..

I'm sure you know that there are a suspicious amount of Freemasons at NASA, as well as the original pioneers of the round Earth model reportedly having ties to Freemasonry. We also know that the conception of the heliocentric model of the universe has spawned generations of atheists, where as before that, the majority of people on Earth were either monotheists or polytheists.

Considering the fact that you cannot become a Mason unless you believe in God-- and they are supposedly behind the biggest conspiracy that led humanity to stop believing in God.. What do you think the agenda is?