Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Please, no more scientific journals! The strategy of the scientific
  publication system   In the same way ecosystems tend to increase maturity by decreasing the flow
of energy per unit biomass, we should move towards a more mature science by
publishing less but high-quality papers and getting away from joining large
teams in small roles. That is, we should decrease our scientific productivity
for good.

28
The categories of this paper are: alg-geom
33
The categories of this paper are: plasm-ph
34
The categories of this paper are: chem-ph
36
The categories of this paper are: cmp-lg
7
The categories of this paper are: hep-th
27
The categories of this paper are: comp-gas
35
The categories of this paper are: mtrl-th
19
The categories of this paper are: eess
2
The categories of this paper are: math
29
The categories of this paper are: funct-an
18
The categories of this paper are: econ
22
The categories of this paper are: chao-dyn
3
The categories of this paper are: physics
9
The categories of this paper are: nlin
13
The categories of this paper are: quant-ph
8
The categories of this paper are: hep-ex