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-## Models with nested numerical solving problems
-
-In computational biology we often have problems with known mathematical
-structure, but the maths is complicated, so we can't analytically connect
-unknown parameters with measurable quantities. Sometimes it's still possible to
-find the measurable quantities using numerical approximations.
-
-Examples:
-
-- find the steady state
-- solve an initial value problem
-
-::: {callout-important}
-
-Bayesian models with nested solving problems are tricky but doable. 
-
-:::
-
-More about Bayesian equation solving problems: @timonenImportanceSamplingApproach2022