# Limitations of computer (mathematical) models

Modeling & Simulation[1]

In many situations it is not possible to know all of the variables involved.

Let's answer this question by looking at a few different systems and imagining which variables might be the most impactful.

## a sports player

If I wanted to create a model of a sports player what variables might I choose? I want to choose a variables that are meaningful. Maybe:

1. number of injuries
2. age
3. number of points scored
4. number of games won
5. number of games lost

Limitation: Of course if I haven't considered their current health, current ability, and their strength compared to a certain team, I would not have an accurate model.

I think these variables MIGHT help me model a sports figure.

## a country

Maybe I wanted to create a model of a country. The variables I choose might be related to what I want to do with my model.

1. percentage of population with electricity access
2. electricity - consumption
3. electricity - exports
4. electricity - imports

These variable are used from the CIA world factbook with gratitude. I wonder why they create models of EVERY COUNTRY ON EARTH?

Limitation: I wonder what happens to electricity when the gas is suddenly cut off? Or if the government introduces a huge subsidy for renewable energy? I would not have an accurate model.

## a car

I wonder how these variables might inform my choices about buying a car:

1. total cost
2. monthly average gasoline cost
3. monthly repair cost
4. monthly resale value

Limitation: I didn't include number of unscheduled repair visits nor did I include number of repair recalls or warranty visits.

## Standards

• Describe the limitations of computer (mathematical) models.

## References

A unit of abstract mathematical system subject to the laws of arithmetic.

Give a detailed account or picture of a situation, event, pattern or process.