From my vantage point, the relationship between information and enlightenment is completely obvious. Without the right information, a person becomes dogmatic rather than broadminded, religiously rather than spiritually interested, a drunkard rather than a psychonaut, a professional athlete rather than a yogi.
When my father grew up, there weren't many books around about yoga, psychedelics, meditation, transpersonal psychology, quantum physics, hyperdimensional physics, ecology etc. Only a decade later the first books were being translated and published, and many more are available today. When I grew up about three decades later, I could go to the library and find Food of the Gods, books by Huxley, and there were programs on TV about reincarnation, the theories of Jung, there were health food stores around etc. I grew up to be a person far less destructive to himself and to his environment, and eventually much more in touch with healing energies and the divine.
Kids growing up today have Wikipedia at their disposal, and can join psychedelic webcommunities like Psychonaut.com. They can choose between all kinds of yoga, martial arts, and other meditative practices. They can have their short experiences of enlightenment (the psychedelic experience) leading to the larger experience of enlightenment (living a harmonious and spiritually progressive life).
If ignorance leads to destruction and stupid drug laws, it could be said that ignorance is related to darkness. Since information or knowledge leads to solutions, healing and harmony, we could say it is related to light (as in many spiritual metaphores. En-light-enment, then, is always dependent on the know-how or knowledge (i.e. information) of subjects like ecology, health, spirituality etc. For me the word "enlightenment" represents not just a personal achievement of nirvana, or a short burst of blissful comprehension, but attaining a mode of being that is conducive to peace and prosperity on Earth, and helps as many people as possible get in touch with their inner core, their true self.
If information regarding the developmental stages of a child, and the needs related to them, is missing in a family or society, parents will harm their children, and those children will become harmful to the world. They will not utilize their human body for realizing who they truly are, and they will not endeavor very much to keep it healthy, or even alive. But if information regarding the needs of the baby, toddler, infant or teenager is known, parents will act more appropriately and children will grow up with a healthy sense of self-esteem, as well as self-control, modesty, and an inner sense of joy, which they spread around as they go through their life, happily exploring the world, learning about other cultures, other types of spirituality etc.
In India and some other countries there are some persons who don't read or even talk, and many people consider them enlightened. Whatever they are, they're not very involved with global affairs. Thus their example of enlightenment is completely irrelevant for us, who know about the precarious state of affairs as far as pollution of the environment, arms race and religious fanaticism are concerned. I even doubt they (the famous ones: the babas, ammas, yogis, swamis, maharsis, bhagvans, lamas, roshis etc.) are truly as enlightened as some of the more educated (past & future) psychonauts struggling in the West.