OhTeeDee,
I mean, there is no safek yom anymore, this we know.
So from this statement, it seems that your problem with 2 day Yom Tovs is that we now utilize a fixed calendar, so it follows that when Rosh Chodesh was declared by the Sanhedrin, you wouldn’t have objections, right?
For example, the torah specifically says that succos is an 8 day holiday
<nitpick>Actually, by the Torah Sukkos is 7 days, as we are commanded to sit in Sukkos for 7 days. The 8th day is a new Yom Tov.</nitpick>
so next friday A. why aren’t you oiver on baal toisif?
Your argument here doesn’t make sense to me, because it would also apply to the times before our calendar was fixed, and from your initial statement, you only seem to have a problem with this after the fixed calendar. Back when Rosh Chodesh was declared by the Sanhedrin, and word of the declaration may not have reached the far flung communities in time for Yom Tov, keeping “eight” days of Pesach still would have been problematic according to your argument, because the Torah commanded seven!
Pesach and Sukkos are seven day festivals. Rosh Hashana, Shavuos, and Shemini Atzeres are one day festivals. This remains true to this day, in the diaspora as well as in Eretz Yisroel. The sages who declared the months also decreed that in the diaspora, both possible days that Yom Tov could fall out based on the synodic month should be observed as Yom Tov, even though one of those days is not Yom Tov.
and B. Shouldn’t you be putting on tfillin? C. Shouldn’t you be doing hakafos (the real ones) on Thursday
The same sages who told us when to lay tefillin and to do hakafos also told us how to observe Yom Tov in the diaspora. Where’s the contradiction?