People shouldn't accept a religion based on one lecture.
Islam, verses from the Quran, good muslims, all those things can make non-muslim person to accept Islam.
On the time of the prophet, there were people that accepted Islam because they knew that the prophet was honest person, and that he never lie, so based on that knowledge, based on the learning of the prophet, based on the fact that he was giving to them, they accepted Islam.
Also, now days there are many scientist that accept Islam from reading some verses of the Qur'an which are talking about the creating and the scientific facts.
People accept Islam more and more everyday, Islam is the fastest growing religion.
So , about the lecture and the 22 people accepting Islam. Well, did I say that they accepted Islam based just on THAT ONE LECTURE? no, i didn't say that. So, you can't say also that they accepted Islam only by that lecture. They were maybe reading about Islam previously, they were maybe present in some other lectures, and okay .. maybe they accepted Islam only based by one lecture. Sometimes it's enough one word to change the life, so Allah changed the life of those people, they are guided elhamdulilah into the only accepted Religion toward Allah.
