Confusion Ka Master - Section 31 of Contract Act

Bhaiyon, I'm literally losing my mind here. Maine Contract Law ka syllabus padha toh khud se hi pata chala ki maine kuch nahi samajha. Aur phir maine Section 31 ki cheezein par padha. Yeh toh mera dimaag hi haai ki jahaan confusion rehta hai. Toh yeh kya hai ke Section 31 mein likha hai ki koi contract jis tarah se banata hai wo jahaan usse sign karte waqt koi condition shamil nahi ho sakti. Lekin Section 32 mein likha hai ki koi contract jis tarah se banata hai wo jahaan usse sign karte waqt koi condition shamil ho sakti hai.