Being practical means being realistic in a "reality" which is self-produced and self-scripted,which furthermore got tagged itself with "duties" appearing in all forms every sec in this known time,amidst the perpetual movements of everything behind the curtains,invisible but existing nonetheless: from inexplicable,infinite,huge,massive Sun like objects in their own orbits! to deep down the contineous movements of the electrons and protons in an atom.The movement of these very focal points of our present reality if ceases to be lively(mix-max?) will certainly bent towards being dull and ruminating.

Living in a system and living in a rhythm may sound similar but there's no music in system while rhythm moves and play actively in all spheres having a vast areas to flow in search of.........music??Music to compliment the rhythm in which particular individuals,animals,plants,water,car,anything that's made up of matter which is obviously tuning/travelling collectively in our space expressing itself in its own ways unbaised and neutral and rightly so.

Made up systems and attachments mostly keep us earth-bound,well-known as "Samsara" restricting us to be playful in this vast playground of time and space.Everything dance/move/play in this cosmos in its own accorded tune,no matter how varied, simply justifying its pulsation and expressing itself in many forms no matter how outlandish or how impecceable.So,when Vasistha told Rama to stay silent for just some time to know the answers he prefer to know;he is merely saying to find his own tuning rhythm to the music of his own universe and get attuned with it.Its not the big planets that are powerful in the space but the vacant space which holds everything in its grip that produce a playful Universe---just my guess.