Christopher Rackauckas

> So there are cases where one option makes sense and another doesn't? In Sys bio the main reason for observables is pretty much the opposite (I have 3,000 differential...

> I think such a function sounds like a very good idea. Personally I think obssyms(sys) is slightly too obscure for public API, and I would prefer something like observeds(sys)...

Yeah I think having some form of problem metadata that allows front ends to set some defaults would be fine. We kind of have that for the solve by allowing...

I don't think this is a sufficient answer. Users using `setu` would expect `u0` to change. If `setu` needs to update Initial(x) to do that, then `setu` should do that,...

This is at least the standard behavior with the rest of remake. There is a coming alias system that could improve this behavior. Copy by default could have some major...

`ODESystem(eqs, t, [pos..., v...], ps; name)` Don't splat. Also, did you try JuliaSimCompiler with this?

Interesting. At 100, can you show a flame graph? Where is it all at?

@AayushSabharwal does your CSE handle this case?

Put to non-strict mode and let's get this in.

It has been repeated and documented for years: do not rely on the exact ordering of variables because you cannot know what they will be. Do not use integers to...