Infinite Possibilities

On the second day of training in Artificing, just like before, Throk started explaining the ins and outs of the craft to build Kahn and Blackwall's sturdy foundation and thus, he started with the advanced knowledge from the get-go after seeing how much potential both of them had displayed after receiving the enlightenment. 

He drew the sign of two overlapping circles curved and connected to each other. 

"Do you know what this sign represents?" he asked. 

"Infinity." replied Kahn the very next moment. 

"Hah? Did you read about it in the books?" 

"Ah… yes." replied the human disciple. 

Kahn was a man of science in his previous life. So he obviously recognized the infinity ( ∞ ) sign. 

"Let me ask you something. 

Imagine that this is a flow of mana and world energy represented through this sign. 

Can you tell me what principle this sign represents?" he asked in a serious voice.