Seven Extraordinary Dates. Muhammad said "Whoever takes 7 'Ajwa dates in the morning will not be affected by magic or poison on that day." (Sahih Bukhari). Our Debate Question: "do the 7 dates protect you from all poison, or only a particular type?

Additional Debate Questions:  Would eating precisely 7 'Ajwa dates protect from poison a 200 kg. man just as much as it would protect a 50 kg. woman?
And just how precisely does eating 7 'ajwa dates protect an individual from magic?
Finally, "the Prophet in his ailment in which he died, used to say, "O 'Aisha! I still feel the pain caused by the food I ate at Khaibar, and at this time, I feel as if my aorta is being cut from that poison." (Sahih Bukhari).  So was Muhammad forgetting to eat the 7 'ajwa dates in the morning?