https://github.com/nickeubank/practicaldatascience_book/blob/main/notebooks/class_2/week_2/35_modifying_subsets_of_vectors.ipynb <img width="1955" height="850" alt="Image" src="https://github.com/user-attachments/assets/0be89dcf-1789-43db-a28d-38e6b1ddde59" /> ? Need to make an R version for R tutorials
