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A good percentage of my client’s presentations deal with technology and science. There are numerous hurdles to overcome when presenting technology; how to make data interesting, how to use metaphor to make complex concepts digestible, how to use wit and humor to engage the audience, etc. But the most difficult aspect of talking science for many presenters is the manner in which they speak.
I think Pranav Mistry gives a good speech here despite having imperfect English. There are moments when his excitement gets the best of him, and he talks too quickly, but the bulk of his presentation is done at a measured pace. When he takes the time to breathe in between thoughts, and slow down, he is much more clear. These “micro-pauses” allow his brain to process what his articulators (lips, tongue, lower jaw, and soft palate) are doing and gives him a moment to think about language. Most of Mr. Mistry’s pronunciation mistakes (some w-v confusion, syllable stress mistakes, problems with phrasing) occur when he is speaking quickly. His brain doesn’t have time to think about pacing, articulation and the like.
You can imagine the left frontal lobe to be a little like a busy highway. The more congested the neural pathways are that connect the brain together, the less likely they are to transmit information. If you speak fast, you clog your frontal lobe with information, and it cannot do what it does best, produce language. So take your time!