Access to police and judicial assistance also depends on which caste one belongs to. By bribing, influencing and intimidating the police and judicial officials, the rural north Indian middle and upper castes tend to manipulate the local police and judicial power more successfully. These types of political rent-seeking's have also helped secure the supply of rents to dominant castes through other channels such as 'rigging Panchayat elections, capturing electoral booths, and using pre-election intimidatory tactics in elections for the state assembly.' Whether an individual or a group can raise enough money for constant bribes depends on the caste-based socioeconomic status. Hence, the advantage in accessing economic resources not only transfers into but also reinforces the political might of the dominant caste groups. Certain scientists and activists, such as MIT systems scientist Dr. VA Shiva Ayyadurai, blame caste for holding back innovation and scientific research in India, making it difficult to sustain progress while regressive social organisation prevails.