Airplane over the Sukkah

Another opinion: Not because it is not above the sukkah, but because it is considered to be in the ”sky” (and not between heaven and earth), and does not separate the sukkah from the sky. Even an eagle soaring above the sukkah does not separate the ”eagle's path in the sky”, just as a cloud does not separate. At what height does the sky begin? This is a question without a clear criterion. But a height of kilometers is certainly sky.

And if there is an area of one hundred kilometers by one hundred kilometers at a height of three kilometers, do you think that is also not a barrier? In my opinion, it seems that it is.

Grape, not sure (and not sure that would be the intuition in this imaginary case). Clouds also sometimes cover the entire sky and yet are not a barrier (although it is possible to distinguish between a cloud and a surface). Since it is very high, it is possible to see it as a surface that is in the sky and is not a barrier because below it there is a piece of “sky” without a barrier.

From your perspective, the sky perspective, indeed, such a ceiling does not interfere.
Clouds or the air itself do not block and it is clear that they are the sky under which the sukkah should be and it is difficult to compare it to other objects just because of the height. And does the one who makes his sukkah on a mountain and the cloud is nearby and visible, will the cloud block?

Regarding the height, it is possible that this does not depend on the true truth as can be discovered with telescopes and measurements, but on what a reasonable person sees. Everyone sees the ceiling and understands that it is above the sukkah. But who knows how to measure and assess whether a helicopter is exactly above the sukkah or not. Therefore, even if it is known that it is above the sukkah, it should not be placed in it.

I thought of a formulation that convinces me: A thatch means something that casts shade. A thatch that doesn't block the sun is not a thatch. It has to be above the sukkah (otherwise it will lack the rays of the sun) and it has to cast shade. If one of the conditions is missing, then it is not a thatch - neither for the sake of kashrut nor for the sake of impossibility. Therefore, a thatch is not invalid. Whereas a ceiling, as I drew, is invalid. What do you think?

Regarding the grave, the reason is known: impurity emanates and rises, emanates and falls. Is this also the case in the sukkah? Not naturally.

Enav, from what I understand, the “giant helicopter” in the question is something theoretical that resembles your ceiling.
It is clear that real planes, no matter how big they are, at an altitude of 3 kilometers are nothing, because they are no more than a line of a few millimeters above a person's head (so is the International Space Station, which is 109 meters wide but is a point above the thatch). On the other hand, the discussion in the question is probably about a theoretical giant helicopter whose shadow occupies three or more palms of the thatch surface (if the sun is at an angle of 90% directly above it).

Shalom Rabbi,

You wrote: “Rabbat Abba Shaul wrote that even something has a lesson (meaning not every crumb is something”).

What is the source of Rabbi Abba Shaul's words?

Thank you very much.

Shalom Rabbi,

You wrote: “Rabbat Abba Shaul wrote that even something has a lesson (meaning not every crumb is something”).

What is the source of Rabbi Abba Shaul's words?

Thank you very much.

Common sense. Otherwise you will start checking for signs of purity in bacteria.

Rabbi, you didn't understand me.

I asked where the words of Rabbi Abba Shaul are written, in which of his works.

Rabbi, you misunderstood me.

I meant to ask in which composition Rabbi Abba Shaul wrote his words.

The rabbi's answer also answers this question… what does it matter where he wrote it? Even if he didn't write it anywhere, it's true 😉

I don't know. I heard his name.

Dvir, if this is true regardless of the speaker, this saying can also be quoted in the name of Shayka Ophir, Julius Caesar, or Og, King of Bashan.