POPULAR
How many people are experiencing the problem? Market size. For example, a special weapon for a one-legged, one-armed, one-eyed bandit is needed by very few people (anyone who likes Leslie Nielsen will understand :))
GROWING
How much of this problem will intensify in the coming years. Market Dynamics. Plastic and garbage come to mind immediately here. Every year this problem becomes more acute.
URGENT
How urgent is the problem? For example, a broken cabinet door in the kitchen is a problem, but it's been hanging there for a year and could still hang there. If the refrigerator is broken, you'll have to do something about it.
EXPENSIVE
How much are you willing to pay to solve this problem? It's a water bottle in the desert or hot soup in 30-degree heat.
MANDATORY
Does this problem have to be solved? For example, they passed a law to fine Euro bikes, and solving the customs clearance problem became mandatory.
FREQUENT
How often is this problem experienced? If we invented a toilet, that would be the solution to a problem experienced several times a day.