What are the philosophical thoughts in Interstellar?

The core crisis given in the film is that all the crops on the earth are reduced because of a blight, which may not support everyone, and the reduction of plants will lead to the decrease of oxygen content and suffocate everyone. The solution given in the film is that if you want to immigrate into space, you need to control gravity, and you need to solve an equation about space, which has been solved by the old professor played by Michael Kane, except for a set of data, called quantum data, which only exists in the horizon of a black hole and cannot be taken out according to the existing theory. This is plan A, to save all mankind. There is also plan B, which is to launch the human fire: 5, fertilized eggs to a distant planet suitable for human habitation through a wormhole, which is equivalent to abandoning most people existing on the ground, leaving only the human civilization fire. Because there was not enough food to eat, the government shut down any space exploration program, and NASA became an underground organization, specializing in this plan A and plan B, saving the planet. Then there is the most important quantum data that the protagonist desperately jumps into a black hole and sends to her daughter by metaphor, which is used to solve the space equation. I haven't found out what this thing is for. According to the film, this data can be used to solve an equation, and then, then? Why does it seem that when the protagonist returns to earth, all the survival crises will be solved? Nolan tried to act like a hard science fiction, making a lot of excuses about black holes, space and time. As a result, the main crisis settled in biology, and finally attracted the audience's attention with the relationship between father and daughter, and swept the solution to the plot conflict set at the beginning-the plants were dying-under the carpet so irresponsibly. Conflicts are transferred layer by layer: plants are dying > Solving equations requires data >; The protagonist falls into a black hole and can't go back. Everything is over > We got the data, sent it back, and the crisis is over!