Is a perfect world possible?
Imagine you are in the year 1798 and you are Thomas Robert Malthus. The Industrial Revolution in England has only begun a couple of years ago in 1785. Malthus argued in his essay, "On Population" that a perfect world isn’t possible due to the Earth being a set size and the population increasing constantly. The power of population is greater than the power of Earth to produce subsistence of man.
Now, imagine you are Malthus and you have somehow been transported to today, the year 2013. How would Malthus react? Would he see that, due to advances in agriculture and farming methods providing more food than we could possibly consume, a perfect world is possible in this day and age? More importantly, do you think his argument would change at all? Can an imperfect world become perfect?
A perfect world is possible
God wanted a perfect earth, but Adam and Eve sinned because they gave into temptation when tried by the devil/evil force. That sin is something that we inherit by nurture and nature. We know that we are limited, and that resources will eventually run out. God made enough resources for the earth to be eternal, we have just hurried to use them up and get to them before others, instead of evenly distributing. In this imperfect world our lives are threatened and as people we have a strong desire to live eternally. Our earth will not just over time get better; rather it is God's way of showing us and every witness, that the world cannot have another ruler and still be eternal and perfect. Eventually we will use up all of the resources and the earth will be destroyed due to our shortcomings. Luckily, if we looked to God for guidance, asked for our sins to be forgiven, and were willing to put in the same amount in effort, as we took out of the earth; or believing that we have to do good to get the good, then we will be able to live in the perfect world with God, because he will be able to trust that we will not do what Adam, Eve, and Hades did all those years ago.