Contract Law ke Bare Me Confusion

Maine papa se seekha hai isme consideration to nahi hone par agreement kaise valid nahi hota, par phir kya hua Mariposa Lines case me? Unhone kaha ki agreement valid hua, kyunki unki intention thi ki unka contract ban jaye. Lekin agar mere paas hai ki main ek agreement sign karta hoon, jisme wo kuch nahi dete, to bas uska intention se koi connection nahi hai. Papa ne kaha ki yeh case alag-alag ho sakte hain, lekin phir bhi mujhe lagta hai ki yeh kuch samajhne kee zaroorat hai. Agar consideration missing hai, toh kya usi case ko hi apply karna chahiye?

[Forum username displayed separately]