# Varying the explanatory span: scientific explanation for computer simulations

## TL;DR

This paper develops a new account of scientific explanation tailored for computer simulations, emphasizing the explanatory relation between models and results and highlighting both epistemic and practical gains.

## Contribution

It introduces a unificationist model of explanation for computer simulations, focusing on the relation between models and results and expanding epistemic gains to include practical benefits.

## Key findings

- Explanatory relation is between simulation model and results.
- Epistemic gain includes practical benefits.
- Unificationist model better suits computer simulations.

## Abstract

This article aims to develop a new account of scientific explanation for computer simulations. To this end, two questions are answered: what is the explanatory relation for computer simulations? and what kind of epistemic gain should be expected? For several reasons tailored to the benefits and needs of computer simulations, these questions are better answered within the unificationist model of scientific explanation. Unlike previous efforts in the literature, I submit that the explanatory relation is between the simulation model and the results of the simulation. I also argue that our epistemic gain goes beyond the unificationist account, encompassing a practical dimension as well.