there are no limitations for mind to expand and use its abilites but it demands very strong focus and calm soul. i want to relate this mind connection with a famous battle of INDIA.
some 5000 years ago there was a battle happened between kaurvas and pandavs known as "MAHABHARAT". In that battle both possess magical wepons for fight. did magical wepons really exist ? No! they uses their mind to develop wepons. their mind connection was strong and powerful to make this miracle happen ! if someone know about "the secret" or " power of your subconcious mind" then it was clearly written in those books that if you think of something with strong dedication and positive will power then he gets true. universe balance all the power by itself if the use of mind is correctly done.