In CLOS, instance remorphing considered useless in practice?

Robert Goldman rpgoldman at
Wed Dec 9 16:25:34 UTC 2020

The answer to this question is that I *don't* invoke `change-class` -- 
the environment does it for me.  That's the beauty of the environment.

Working with Python, where I have a machine learning model that I want 
to tweak without retraining has been very instructive for me in 
reminding me what I would lose without `change-class`.

On 9 Dec 2020, at 8:55, dbm at wrote:

> Can I ask why you invoke #'CL:CHANGE-CLASS on an object instead of 
> simply creating a new instance of the second class with adequate 
> initialization?
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