No. It solves the problem of having to reason about data dependencies between functions at scale, typically in the service of doing the minimum amount of work required to get a certain result. As "Steve Wampler" points out in the comments, it's a bit like Inversion of Control/ Dependency injection, except for transient data between functions as opposed to services, connection pools, etc.

Other systems that solve similar problems, whose explanations might make more sense to you: Prismatic's Graph (http://blog.getprismatic.com/prismatics-graph-at-strange-loo...), Jane Street's Incremental (https://blogs.janestreet.com/introducing-incremental/)—and, though it doesn't nicely cover IO—the general concept of laziness in programming languages (https://www.cs.kent.ac.uk/people/staff/dat/miranda/whyfp90.p...).