In the demo listed at `https://docs.sciml.ai/Overview/dev/showcase/missing_physics/`

,

there is the following call that defines a Universal differential equation, where `U`

is a neural network model:

```
# Define the hybrid model
function ude_dynamics!(du,u, p, t, p_true)
û = U(u, p, st)[1] # Network prediction
du[1] = p_true[1]*u[1] + û[1]
du[2] = -p_true[4]*u[2] + û[2]
end
```

Why aren’t the parameters `p`

and `p_true`

concatenated into a single parameter argument or put into a tuple `(p, p_true)`

, for example by doing:

```
params = (p, p_true)
function ude_dynamics!(du, u, params, t)
p, p_true = params
û = U(u, p, st)[1]
du[1] = p_true[1]*u[1] + û[1]
du[2] = -p_true[4]*u[2] + û[2]
end
Thanks,
```