Our course description includes this classic quote:
"I remember my friend Johnny von Neumann used to say, with four parameters I can fit an elephant, and with five I can make him wiggle his trunk." - Enrico Fermi
Here's a nice illustration of fitting an elephant (or a bird, or a tortoise, or a fish,...) with a single parameter:

References: arXiv paper, Jupyter Notebook code
Our course description includes this classic quote:
"I remember my friend Johnny von Neumann used to say, with four parameters I can fit an elephant, and with five I can make him wiggle his trunk." - Enrico Fermi
Here's a nice illustration of fitting an elephant (or a bird, or a tortoise, or a fish,...) with a single parameter:
References: arXiv paper, Jupyter Notebook code