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The pineal gland regulates the sleep process and some things are not responsible for the thinking process

It can do a lot more than that.

It can grant you access to metaphysical attributes if treated with respect and practiced with patience.

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That's what the ancient Egyptians were trying to depict.
Buddha's Statues always refer to meditation and, therefore, the pineal gland too, and their heads are pineal glands as well. Many different ancient civilizations have tried to deliver this type of knowledge.

Thank you informative and useful dear was glad to meet you