The robots had to face adverse outdoor conditions such as rain, wind and extreme temperatures. Some significant current robots include: Sophia is an autonomous robot that is known for its human-like appearance and behavior compared to previous robotic variants. As of 2018, Sophia's architecture includes scripting software, a chat system, and OpenCog, an AI system designed for general reasoning. Sophia imitates human gestures and facial expressions and is able to answer certain questions and to make simple conversations on predefined topics (e.g. on the weather). Sophia uses speech recognition technology from Alphabet Inc. (the parent company of Google) and is "designed to get smarter over time". The AI program analyses conversations and extracts data that allows it to improve responses in the future. Nine other robot humanoid "siblings" who were also created by Hanson Robotics. Fellow Hanson robots are Alice, Albert Einstein Hubo, BINA48, Han, Jules, Professor Einstein, Philip K. Dick Android, Zeno, and Joey Chaos. Around 2019–20, Hanson released "Little Sophia" as a companion that could teach children how to code, including support for Python, Blockly, and Raspberry Pi. Military autonomous robots Lethal autonomous weapons (LAWs) are a type of autonomous robot military system that can independently search for and engage targets based on programmed constraints and descriptions. LAWs are also known as lethal autonomous weapon systems (LAWS), autonomous weapon systems (AWS), robotic weapons, killer robots or slaughterbots. LAWs may operate in the air, on land, on water, under water, or in space. The autonomy of current systems was restricted in the sense that a human gives the final command to attack - though there are exceptions with certain "defensive" systems. UGV Interoperability Profile (UGV IOP), Robotics and Autonomous Systems – Ground IOP (RAS-G IOP), was originally a research program started by the United States Department of Defense (DoD) to organize and maintain open architecture interoperability standards for Unmanned Ground Vehicles (UGV). The IOP was initially created by U.S. Army Robotic Systems Joint Project Office (RS JPO): In October 2019, Textron and Howe & Howe unveiled their Ripsaw M5 vehicle, and on 9 January 2020, the U.S. Army awarded them a contract for the Robotic Combat Vehicle-Medium (RCV-M) program. Four Ripsaw M5 prototypes are to be delivered and used in a company-level to determine the feasibility of integrating unmanned vehicles into ground combat operations in late 2021. It can reach speeds of more than , has a combat weight