The four sentences (labelled 1, 2, 3 and 4) below, when properly sequenced, would yield a coherent paragraph. Decide on the proper sequencing of the order of the sentences:
1. The development of artificial intelligence (AI) has revolutionized various industries, from healthcare to finance, by automating complex tasks and improving efficiency.
2. However, concerns about AI's ethical implications, such as privacy violations and algorithmic biases, have also been raised as its usage becomes more widespread.
3. AI systems rely on vast amounts of data to train algorithms, which can sometimes lead to unintended consequences if the data is biased or incomplete.
4. Despite these challenges, AI continues to be integrated into everyday applications, driving innovation and shaping the future of technology.
Choose the sequence of the four numbers that best forms a coherent paragraph: