Watch @balajis's guest lecture he did for Cohort 1 where he talked about the 𝐨𝐩𝐞𝐧, 𝐮𝐧𝐬𝐞𝐱𝐲 𝐩𝐫𝐨𝐛𝐥𝐞𝐦𝐬 𝐢𝐧 𝐜𝐫𝐲𝐩𝐭𝐨 If you want some inspiration for problems to tackle, this is worth watching