The Siddhars have been working on how to evolve the human brain capacity and where also able to do time travel many years ago. For example

• “Became a grass, wormwood, and tree
• Become a snake and become a bird
• Become a stone, a man, a ghost
• Become a demon, a saint and a devar
• And also in the confluence of plants
• All births was experienced by me
• Truth of your Foot was found I am surrendering myself to u O My Lord ."

Fully aware of the importance of evolution, they analysed it and did self-assessment, they wandered in the forest and mountains for many years, turned themselves into a scientific laboratory, and found success in self-assessment.
"He did not listen to himself to know himself.
He spoils himself without knowing himself After knowing the knowledge of self to admire himself."
The noble man attained the supreme state of great power, after years of struggle and became a Siddhar. Surrender is the only solution if we follow this direction to attain higher self.