Consider a deck of 52 playing cards. After giving the deck a shuffle, where would you most likely find the original top card?

I created this small web-application based on Next.js and visx to give you the answer for several different types of shuffles.

To run the simulation models yourself, create a python environment and install the only dependency numpy:

python -m venv .venv 
pip install numpy

Calling model.py will then run the simulations and store the results in the data.json where it is picked up by the Next.js application.