Thadasthu Devathalu

This concept/belief in our tradition may look funny "If you say anything and thadasthu/Ashwini devatas say thadasthu, Then it will happen for sure...

This is actually nothing but the subconscious mind. Subconsciousness is a state where our mind thinks involuntarily about some things and even affects us while doing physical actions...

For example, if you really wanted to get up at 6 am tomorrow morning and you are fixed that you're going to get up on time in your mind... and you will wake up at the right time even without alarm... this is done by unconsciousness.

When you really think and are passionate about some work, then your subconscious mind make you do that

When you are sleeping you may lose your consciousness, but subconsciousness is always active... dreams will also be affected by the subconscious mind.

The concept of Ashwini devatas/thadasthu devatas is also similar to the subconscious mind. Just try comparing both ; )

Also, read the WHY GOD post to understand this better