After comparing all these mystic yoga-siddhis to materialistic perfections it is found that the materialistic scientists try for the same perfections. So actually there is no difference between mystic perfection and materialistic perfection. A German scholar once said that the so-called yoga perfections have already been achieved by the modern scientists, and so he was not concerned with them. He intelligently went to India to learn how he could understand his eternal relationship with the Supreme Lord by means of bhakti-yoga, devotional service.
Of course, in the categories of mystic perfection there are certain processes which the material scientists have not yet been able to develop. For instance, a mystic yogī can enter into the sun planet simply by using the rays of the sunshine. This perfection is called laghimā. Similarly, a yogī can touch the moon with his finger. Though the modern astronauts go to the moon with the help of spaceships, they undergo many difficulties, whereas a person with mystic perfection can extend his hand and touch the moon with his finger. This siddhi is called prāpti, or acquisition. With this prāpti-siddhi, the perfect mystic yogī can not only touch the moon planet, but he can extend his hand anywhere and take whatever he likes. He may be sitting thousands of miles away from a certain place, and if he likes he can take fruit from a garden there. This is prāpti-siddhi.
The modern scientists have manufactured nuclear weapons with which they can destroy an insignificant part of this planet, but by the yoga-siddhi known as īśitā one can create and destroy an entire planet simply at will. Another perfection is called vaśitā, and by this perfection one can bring anyone under his control. This is a kind of hypnotism which is almost irresistible. Sometimes it is found that a yogī who may have attained a little perfection in this vaśitā mystic power comes out among the people and speaks all sorts of nonsense, controls their minds, exploits them, takes their money and then goes away.
There is another mystic perfection which is known as prākāmya (magic). By this prākāmya power one can achieve anything he likes. For example, one can make water enter into his eye and then again come out from within the eye. Simply by his will he can perform such wonderful activities.
The highest perfection of mystic power is called kāmāvasāyitā. This is also magic, but whereas the prākāmya power acts to create wonderful effects within the scope of nature, kāmāvasāyitā permits one to contradict nature—in other words, to do the impossible. Of course, one can derive great amounts of temporary happiness by achieving such yogic materialistic perfections.
Foolishly, people who are enamored of the glimmer of modern materialistic advancement are thinking that the Kṛṣṇa consciousness movement is for less intelligent men. "I am better off being busy with my material comforts—maintaining a nice apartment, family and sex life." These people do not know that at any moment they can be kicked out of their material situation. Due to ignorance, they do not know that real life is eternal. The temporary comforts of the body are not the goal of life, and it is due only to darkest ignorance that people become enamored of the glimmering advancement of material comforts. Śrīla Bhaktivinode Thākur has therefore said that the advancement of material knowledge renders a person more foolish because it causes one to forget his real identification by its glimmer. This is doom for him, because this human form of life is meant for getting out of the material contamination. By the advancement of material knowledge, people are becoming more and more entangled in material existence. They have no hope of being liberated from this catastrophe.
In the Hari-bhakti-sudhodaya it is stated that Prahlāda Mahārāj, a great devotee of the Lord, prayed to Nṛsiṁhadeva (the half-lion half-man incarnation), as follows: "My dear Lord, I repeatedly pray unto Your lotus feet that I may simply be stronger in devotional service. I simply pray that my Kṛṣṇa consciousness may be more strong and steady, because happiness derived out of Kṛṣṇa consciousness and devotional service is so powerful that with it one can have all the other perfections of religiousness, economic development, sense gratification and even the attainment of liberation from material existence."