Full Idea
The analysis of verisimilitude has been much debated. Some plausible analyses have failed disastrously, others conflict with one another. One conclusion is that verisimilitude seems to consist of several distinguishable virtues.
Gist of Idea
Verisimilitude has proved hard to analyse, and seems to have several components
Source
David Lewis (Causal Explanation [1986], V n7)
Book Reference
Lewis,David: 'Philosophical Papers Vol.2' [OUP 1986], p.226
A Reaction
Presumably if it is complex, you can approach truth in one respect while receding from it in another. It seems clear enough if you are calculating pi by some iterative process.