Do you all remember Avinash's re-entry in Choti Bahu as Abhay? The below picture should remind you that. Excuse the static generated in the pic here and there, but concentrate on Abhay's attire.
What is he wearing? He is wearing a traditional Indian dress - the dhoti and the long kurta.
Why do you think Abhay even after jumping from a height of 12-15ft landed safely on the ground?
Now, think about his dhoti. Don't you think the dhoti reminds you of a parachute?

A parachute is a device used to slow the motion of an object through an atmosphere by creating drag. Parachutes are usually made out of cloth, most commonly nylon.
In that above scene of Abhay's dashing reentry, his dhoti acted as a "parachute" and helped him land safely of the ground.
Now, lets go to the science class. Today we will learn about Streamlined Bodies. Below are examples of Streamlined Bodies - Airplane, motorboat and a paper rocket.
Streamlined Bodies are those objects whose body contour when moved through gas or liquid offer minimum resistance.
Now take a closer look at what Dev was wearing before he left the home and never returned.
Dev was wearing a kurta-pajama. Take a not of the shape of pajama. Pajama is not like the dhoti and hence does not serve to be called a parachute. Pajama is closer to be called a Streamlined object and makes Dev wearing this a Streamlined Body.
When Dev wearing this pajama was pushed down the valley, Dev was falling down towards the gravitational pull and in addition his body was streamlined. Hence the velocity with which he hits the ground was very high. He probably might have had several somersaults before landing on the ground head-first. And hence he had head-injury and was in the hospital for several days in coma. Due to the high impact on the brain, he lost his memory.
Now, to bring back Dev's memory in Abhay, all the CVs have to do is bring Abhay and Rajjan near the same cliff, this time because of Radhika, as Rajjan has kidnapped Radhika ala Raavan-style. Have Abhay & Rajjan argue and have a fist-fight. Rajjan can either push purposely or Abhay can slip from the cliff and fall in the valley. But, But, But guys, remember this time it is Abhay falling and not Dev. The reason why I am so excited about Abhay's fall is because he is the guy wearing the dhoti aka parachute. So, Abhay might fall and also land on his head. But because the dhoti can act as parachute, the impact will be only good enough to bring back Dev's memory and not so serious that he would be in coma. So, as soon as he lands on his head with the protection of dhoti, Dev's memory would return and he will realize he has fallen from the cliff. He will get angry and say in Dharmendra-istyle "Kaun hai bey jo mujhe upar se dakkha diya" and climbs all the way back up to see Rajjan man-handling Radhika. Seeing that Dev's blood will boil and he will again in Dharmendra-istyle say, "'Kutte .. Kameeney.. Main tere khoon pee jaungaaaaa" and hits Rajjan so hard that he would turn into a pulp.
Radhika will say, "yeh kanha ne chaaha tha. Since you did not go to hospital this time, kanha did not kill him". Rajjan will be writhing in pain. Dev and Radhika will look into each others eyes and smile.
For some of the forumers I can add - Dev and Radhika will hug and kiss and kiss-kiss and hug-hug and hug-hug and kiss-kiss .....
CVs cannot even show 'THE END' because they think the forumer should get an eye-full of their RaDev hugging and kissing before the TV sings 'Jhansi ki raani aayi.........'