This video is FANTASTIC. Thank you so much. First time I've ever see someone draw what the imaginary number is conceptually! Also seeing a 4 dime sional vector

This video is FANTASTIC. Thank you so much. First time I've ever see someone draw what the imaginary number is conceptually! Also seeing a 4 dime sional vector space defined in R2 blew my mind. Thankyou. Students these days are very lucky.