Hand Drawing - Converting imagination to reality

During the process of my thesis, I constantly encountered new "What if's", to the point where I decided to sketch by hand and through different software any idea that would come to my mind.

Here, I captured more than 40 models made within 2 months. Click Here to see the sketches

Through the use of modular architecture, these sketches are the result of my exploration on how architecture could work as a social, cultural, educational and economical ecosystem to heal and improve communities. You can find my full thesis project in my profile! What do you think of hand drawing? Is it still relevant?