Hi busboy, The Parable of the Talents you refer to is not meant to teach us to further our worldly riches... Matt. 19:23 Then Jesus said to His disciples, “Truly I tell you, it is difficult for a rich man to enter the kingdom of heaven. 24 Again I tell you, it is easier for a camel to pass through the eye of a needle than for a rich man to enter the kingdom of God.”
The story of Yeshua clearly teaches that he didn't seek worldly riches or position.
Human minds, as you say, may "think there are always 2 ways to look at things."
However, the Way of God is one, not of two minds, but of one mind.
I equate double-mindedness, being in two minds, or looking two ways with duality which is an impersonal word meaning the same personal Devil.
The Devil operates in all human minds. This is the struggle we all have with our "selves" which is a circular self-referential false duality. Humans seemingly have a physical material side and a mental spiritual side. However, the physical worldly side is a passing shadow, while the mental spiritual side is dualistic.
Human spirit split from "Our father who art in heaven" (Infinite/Eternal) and fell into separation or sin or the big lie of our father the Devil (bondage in finite space and time), false duality of things.
All true riches are from God and are spiritual. The talents symbolise this. Our abilities are to be used to return all glory to God whence they came. We are not to hide our light under a worldly bushel, meaning we are not to block God's Light from shining through us. These are NOT our human talents to possess selfishly. All talents, all riches are from God and return to God.
Worldly, two-minded humans may wrongly think they are furthering their worldly riches and working to further God's work both at the same time. That's a false prosperity gospel propagated by many so-called "christians" whose churches have been gutted by Satan from their beginnings - Read the first few chapters of Revelations, messages to the 7 churches. Especially the message to the last church in Laodicea. I visited all 7 church sites. Laodicea is the only site where no church or settlement exists. And that is a prophecy for our "christian churches" today! They've all succombed to Devilish distortions that block us from Truth, from God, from Eternal Life.
We are not here for worldly gains, but rather to overcome the world and such false teachings. For God is Spirit and we worship in Spirit and Truth. Two-mindedness allows the Devil the benefit of our doubts, and from such dark doubting and denials of Truth spring up false, erronous thoughts that lead us astray away from The Way.