I just noticed the TED branding and felt to also note that Mind shares or extends what it accepts, and thus gives as it receives. What you accept into you mind is validated in you by sharing it.
There is a deep level of this that cant easily be talked of - but all our actions and words are expressing or extending the ideas that we have accepted as our self and indeed our reality - and so we teach what we are... to ourselves - and each other. But what we learn is not forced upon us for we are free to accept what is in our minds, as it is - or as it is presented.
That is to say a conditioning can be observed and disregarded such as to accept a fresh appreciation of reality - and live out from there.
The undiscerning acceptance into our minds of thoughts and intentions and stories that undermine our integrity and our peace - perhaps for some short moment of personal thrill or satisfaction, or to maintain an imaginary facade we wish was true - leads to the undermining of true communication and culture.
Ideas worth sharing are not only the articulation of thinking that inspires or awakens a sense of life's value in wonder and appreciation - but the ideas that we live out from as our current sense of value.
The seeking of control over communication is part of the mentality of the wish to be special. We all can readily observe this in our own consciousness. Yet the valuing of the conditions in which true communication can occur is the willingness to enter into communication open-minded, listening attentive and in an extension of trust and shared value.
The egoic mind is reactive and obfuscates such as to disconnect or introduce distraction or noise - yet a persistence in listening will uncover our own resonances to such and enable us to move free of them in ourself - and thus be more aware and discerning and less easily baited or provoked.
Ideas worthy of sharing are those that share value rather than seek to own or control it; giving as we would ourselves receive.