Guido Wolf Reichert

Wouldn't the case that "literal" repleacement is meant imply that one needs to apply global name lookup by giving full names starting with ` .` when `redeclaration` choices are given...

But isn't it also kind of sad to note that more than 20 years since the System Dynamics library was released, it is still not widely acceptable or possible to...

### Calendar Time and Physical Time From our telephone conversation I take away that custom definitions for other units of time require _more_ careful thought. Explicitly, calendar time was set...

> > To me, exact calendar dates are best given as a list `{y, m, d, h, m, s}` and then certainly adding an amount of time to a defined...

As a quick addendum: I assume that for most purposes the classical Newtonian model of space and time is sufficient. Accordingly, simulations will typically assume a universal clock and do...

> > @qlambert-pro I would consider your example an ill-conditioned model without physical meaning and rewrite it: > > ``` > > model Test > > Real x(unit = "m");...

> @gwr69 I'm an engineer, to me it's not cumbersome. I prepare my equations from textbook or from my own research before I start modeling. As long as equations are...

> > > Will this give the same result? (Except for error diagnostics when it fails.) > > > > > > I think the place it may differ is...

> > ``` > > model HelloWorld > > Real x(start = 1); > > equation > > der(x) = -x; > > end HelloWorld; > > ``` > [...]...

> > Can someone please educate me on why adding `Real y = sin(x * time)` is "something that gives a unit to x"? > > We are operating on...