A justification is your reason for engaging in a process.
“I need a car” is an unjustified statement.
“I need a car in order to be able to get to a job” is a justified statement.
Conflict is when you have two justifications that you cannot hold to simultaneously.
“I need a car in order to be able to get to a job” and “I should hide my identity in order to avoid being found.”
If getting a car in order to get to a job means exposing my identity, then I cannot simultaneously engage in both of these processes. I will either need a car and risk exposing my identity or I will need to hide my identity and find some other way to get to a job.
This gives us the format in didomachiatto’s post. “I need a car in order to get to a job unless I should hide my identity in order to avoid being found.” This was once (and maybe still is?) commonly referred to as a justification statement though it’s really more of a conflict statement.
A problem is when you have justified a process but because of a conflict are unable to engage in that process (others may disagree with that, this is how I use it, though).
“Getting a car” is not a problem. “Getting a car causes my identity to be exposed” is a problem.
“Hiding my identity” is not a problem. “Hiding my identity prevents me from getting a car” is a problem.
Tension (again, this is how I use all of this, results may vary), and the bulk of what happens in a story comes from an attempt to hold both conflicting justifications at the same time.
“If getting a car risks exposing my identity, then I won’t get a car” provides no tension. “If getting a car risks exposing my identity, then I will steal a car, or maybe use a false I.D. to get the car” provides tension.
How tense the tension is depends on the situation. If there is a car with the keys in the ignition and no one watching and you have no moral compunction, stealing a car won’t be very tense. If there is a car with the keys locked inside of a house with an alarm and a pack of guard dogs and the guy that lives there owns a bunch of guns, the police are circling the block, and you know Santa Claus is watching,the tension will be much more tense.