Most of the talks that you've heard in the last several fabulous days have been from people who have the characteristic that they have thought about something, they are experts, they know what's going on.
معظم المحاضرات التي استمعتم اليها خلال الأيام الرائعة التي مضت ألقاها أناسٌ يتميزون بكونهم قاموا بالتفكير في مسألة ما، هم خبراءٌ، وعلى اطلاعٍ بما يجري .